Modal Certainty Challenge

Froggy Jumps

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About this activity

Test your control of must, can’t, may, might, could.

Created by

Genesis Machicado

Bolivia

Download the paper version to play

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1	Genesis Machicado October 14, 2025	% 80	02:34

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Froggy Jumps Modal Certainty ChallengeOnline version Test your control of must, can’t, may, might, could. by Genesis Machicado 1 Which sentence shows strong present certainty? a She can't be at the library now. b She may be at the library now. c She must be at the library now. 2 Which expresses present impossibility? a He can't be sleeping right now. b He may be sleeping right now. c He must be sleeping right now. 3 Which uses may for present possibility? a It must rain today. b It may rain today. c It can't rain today. 4 Which sentence suggests future possibility? a They can't arrive by noon. b They must arrive by noon. c They might arrive by noon. 5 Which expresses a capability possibility? a She could be at the gym. b She must be at the gym. c She will be at the gym. 6 Which expresses certainty about the past? a She must have finished the test. b She may have finished the test. c She can't have finished the test. 7 Which is a negative certainty about the present? a You can't be serious. b You must be serious. c You may be serious. 8 Which uses may to express permission-like certainty? a You might borrow my bike. b You must borrow my bike. c You may borrow my bike. 9 Which sentence expresses mild possibility in the future? a We could go to the concert tomorrow. b We will go to the concert tomorrow. c We must go to the concert tomorrow. 10 Which sentence shows polite suggestion with might? a We might try that new restaurant. b We can't try that new restaurant. c We must try that new restaurant.

Froggy Jumps

Modal Certainty ChallengeOnline version

Test your control of must, can’t, may, might, could.

by Genesis Machicado

Which sentence shows strong present certainty?

She can't be at the library now.

She may be at the library now.

She must be at the library now.

Which expresses present impossibility?

He can't be sleeping right now.

He may be sleeping right now.

He must be sleeping right now.

Which uses may for present possibility?

It must rain today.

It may rain today.

It can't rain today.

Which sentence suggests future possibility?

They can't arrive by noon.

They must arrive by noon.

They might arrive by noon.

Which expresses a capability possibility?

She could be at the gym.

She must be at the gym.

She will be at the gym.

Which expresses certainty about the past?

She must have finished the test.

She may have finished the test.

She can't have finished the test.

Which is a negative certainty about the present?

You can't be serious.

You must be serious.

You may be serious.

Which uses may to express permission-like certainty?

You might borrow my bike.

You must borrow my bike.

You may borrow my bike.

Which sentence expresses mild possibility in the future?

We could go to the concert tomorrow.

We will go to the concert tomorrow.

We must go to the concert tomorrow.

Which sentence shows polite suggestion with might?

We might try that new restaurant.

We can't try that new restaurant.

We must try that new restaurant.

You can integrate the game into an LMS compatible with LTI 1.1 or LTI 1.3 such as Canvas, Moodle, or Blackboard. This way, the scores will be automatically saved into the platform’s gradebook.

Modal Certainty Challenge

Froggy Jumps

About this activity

Created by

Download the paper version to play

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Modal Certainty ChallengeOnline version

by Genesis Machicado

Which sentence shows strong present certainty?

Which expresses present impossibility?

Which uses may for present possibility?

Which sentence suggests future possibility?

Which expresses a capability possibility?

Which expresses certainty about the past?

Which is a negative certainty about the present?

Which uses may to express permission-like certainty?

Which sentence expresses mild possibility in the future?

Which sentence shows polite suggestion with might?

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