Mr. Smith would have come to see you if it had been possible, but he __________ so busy.
| A．was | B．had been | C．has been | D．were |
— Your room looks a real mess, Tony.
— ____?
| A．What for | B．So what | C．What if | D．So how |
The little boy is lucky enough to have escaped ____ to death in the big fire.
| A．burning | B．to be burned |
| C．being burned | D．to have been burned |
— I am sorry to hear that your mother is ill in hospital.
— ____.
| A．That’s all right |
| B．You don’t have to be so sorry |
| C．It is nothing |
| D．It’s very kind of you |
Generally speaking, in the United States ____ 15-percent tip is normal for ____ most restaurants.
| A．a; / | B．an; the | C．/; a | D．/; the |
You say you don’t believe in marriage,but I bet you sing a different song when you finally ______ with this beautiful girl.
| A．fall in love | B．get along | C．are connected | D．are pleased |