Vocabulary - Spelling Online version You must use "might", "may", "will" or "going to" according to the definition. by FRANCY NATHALY POVEDA SANCHEZ 1 May 2 Will 3 Be going to 4 Might 5 Likely 6 Unlikely ask for a permission we are not sure about something Decisions at the moment Predictions with out evidence We use for plans. Evidence. To refer to permission. We use most often to refer to weak possibility. Follow by a verb in the -to infinitive form. it is probably going to happen. Not promising, likely to fail. Not likely to succeed; not promising.