—Where is my little dog?
—It the back of the house．
| A．has gone to | B．had gone to | C．has been to | D．had been to |
You can’t get in. The exam _________ for over 30 minutes.
| A．has been on | B．has begun | C．began | D．has started |
I ____ an expensive gift for my birthday, but I could not ____ it.
| A．accepted, received | B．received, accept |
| C．accepted, receive | D．accepted, received |
--Dad, why should I stopcomputer games?
--For your health, my boy, I’m afraid you.
| A．to play; must | B．playing; have to | C．to play; can | D．playing; may |
The children were made ______ homework first.
| A．do | B．to do | C．did | D．doing |
--I hope you don’t mind my pointing out your mistakes.
--____________ .
| A．Not at all | B．You’re welcome | C．Of course | D．It’s a pleasure |