There are many trees on ________ sides of the road.
| A．either | B．both | C．neither | D．every |
— Do not give up! Perhaps ________ tough task needs more of your effort.
— I won’t. I’ll have ________ second try anyway.
| A．a; a | B．the; a | C．a; the | D．the; the |
---Would you mind my sitting here, sir?
---_________. It’s for my wife.
| A．Not at all | B．Certainly not | C．I’m afraid you can’t | D．All right |
It’s clever________ Amy to make a birthday cake, but it’s hard _____ me to do that.
| A．for ; for | B．of ; of | C．for ; of | D．of ; for |
You have finished most of the work, so you ______ start working so early tomorrow. You ______ come at 9:00.
| A．can’t ; may | B．mustn’t ; can | C．needn’t ; may | D．couldn’t ; can |
We still don’t know what _________ while we were away from home.
| A．had happened | B．was happened | C．has happened | D．happened |