Come and see me whenever ______.
| A．you are convenient | B．you will be convenient |
| C．it is convenient to you | D．it will be convenient to you |
--- Did Jack come back early last night?
--- Yes. It was not yet eight o’clock ______ he arrived home.
| A．before | B．until | C．when | D．af ter |
In some countries citizens are ______ to vote, and if they don’t they get fined.
| A．demanded | B．suggested | C．prevented | D．required |
We’ve been looking at houses but haven’t found ______ we like yet.
| A．them | B．ones | C．it | D．one |
______is known to us all, only the theory ______ on practice can be practical.
| A．Which; base | B．Which; based | C．As; based | D．As; basing |
Mary’s teacher recommends she ______ the post in the company.
| A．applies for | B．apply for | C．applying to | D．applied to |