_____ the use of cigarettes on an aircraft should have ...

[ Grammar ]

_____ the use of cigarettes on an aircraft should have been done long ago.

A. Ban

B. bans

C. banned

D. banning

Select your answer:
A B C D E

Other quiz:

Modals and Inversion › View

Choose the correct modal: They ___ be at the meeting by 10 AM. (must/can’t)

A. might

B. should

C. could

D. must

Future Tenses › View

I think I ___ a cassette recorder and use it in class.

A. buy

B. am buying

C. will buy

D. would buy