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:

Other quiz:

Noun / Pronoun › View

. In the sentence “Whom did you invite to the party?” identify the type of pronoun “whom” is.

A. relative pronoun

B. interrogative pronoun

C. demonstrative pronoun

D. indefinite pronoun

Grammar and Vocabulary › View

The third person singular of the verb ‘finish’

A. finish

B. finishes

C. finishing

D. finishs