Réponse:

1 ) I may have made a mistake

2 ) You must have seen this film

3 ) She may hasn't been to England

4 ) It must was a joke

5 ) He may have didn't see us

6 ) She may have knew the truth

7 ) It must have cost them a lot of money

8 ) They were must having dinner

9 )There may was a accident

10 )There were must have many problems to solve.

Explications:

Verifie comme meme car je ne suis pas si sure