Modal verbs: simple and perfectOnline version Modal verbs (Bach) by Maribel Gil 1 I ... go for a bike ride later, but I'm not sure yet. a might b have to c can't 2 You ... come to the concert with us. It'll be great! a ought to b may c needn't 3 I ... study harder this year in order to improve my marks. a may b must c could 4 I ... understand the film at all. a shouldn't b didn't have to c wasn't able to 5 Why did you walk when you ...? a would have driven b could have driven c shouldn't have driven 6 My phone isn't in my bag. I .... left it at home. a must have b should have c would have 7 There was a terrible storm. He.... driven the car. a couldn't have b shouldn't have c may have 8 The film was a let-down. We .... seen something else. a may have b must have c should have 9 She is very tired today. She .... worked too much. a must have b may have c can't have