He smiled politelyMary apologized for her drunken friends.
| A． | as | B． | if |
| C． | unless | D． | though |
—Hi, Tina ,we’re going to Sam’s house to celebrate his graduation. Would you like to ?
—Great! Let’s go.
| A．come up | B．come on | C．come out | D．come along |
－It’s many years since I saw you last, I __________ you at all.
－I wouldn’t have, either, if someone __________ you by the name.
| A．didn’t recognize; hadn’t called | B．didn’t recognize; didn’t call |
| C．haven’t recognized; didn’t call | D．can’t recognize; had called |
When he looked up, he suddenly found himselfby a group of teenagers,
| A．to be surrounded; | B．surrounded; |
| C．be surrounded; | D．having been surrounded; |
I really don’t know _________ I had my money stolen.
| A．when was it that | B．that it was when |
| C．where it was that | D．it was where that |
_________ the problem of land erosion getting more serious, the government is searching for a way to deal with it.
| A．As | B．With | C．When | D．Because |