. The Roman Empire _____ for several centuries.
A exists B. existed C. was existed D. is existing
.I’m sorry, but I had no alternative. I simply ______ what I did.
a. must do b. had to do c. ought to have done d. have to do
______ to see a film with us today?
a. Did you like b. Would you like c. Will you like d. Have you liked
If they ______, our plan will fall flat.
a. are co-operating b. had not co-operated c. won’t co-operate d. didn’t co-operate
“You realize that you were driving at 100 mph, don’t you?”
“No, officer. I ______. This car can’t do more than 80.”
a. didn’t need to be b. may not have been c. couldn’t have been d. needn’t have been
There are nine of them, so ______ get into the car at the same time.
a. they may not at all b. all they may not c. they can’t all d. all they can’t