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:

Preposition Form › View

Choose the correct option to fill in the blanks with suitable prepositions.

They set ___________ their differences and came together for a common cause.

A. aside

B. with

C. about

D. through

Past Tense › View

What …… you ……there?

A. did – bought

B. did – buy

C. did – buyed

D. were – buy

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