They _______ have finished the project so quickly; it was ...

[ Past Modals ]

They _______ have finished the project so quickly; it was very complicated.

A. can’t

B. can’t have

C. must

D. should

Select your answer:
A B C D E

Other quiz:

Tenses › View

Choose the correct form of the verb: He ___________ to the park every day.

A. going

B. goes

C. went

D. go

Pronoun › View

This building is so expensive for ___ . We can’t pay such a high rent. We need to think again.

A. them

B. her

C. us

D. it

E. him

Wh- Questions › View

-Assistant:____________do you live?

-Marge: I live with my family in Springfield

A. When

B. Who

C. Where

D. How

Grammar › View

Find the subject. James was the guitarist for a jazz band.

A. James

B. was the guitarist

C. for the jazz band