Only when class began _____ that he had left his book at home.
| A．will he realize | B．he did realize | C．did he realize | D．should he realize |
In English class, our teacher often creates an environment __________ we are given the opportunity to solve problems ourselves.
| A．where | B．when | C．which | D．that |
— It’s hard to believe that Jack ________ have fought with the policeman.
— Yes. If one ________ ask for trouble, it can’t be helped.
| A．would; will | B．should; must | C．must; may | D．need; dare |
I listened carefully to his long boring speech, but could not ________ what he was talking about．
| A．pick out | B．bring out | C．make out | D．find out |
--- Wow, that’s so expensive. Shall I make a (n) _________?
--- I’m sorry, sir. The price is fixed.
| A．charge | B．suggestion | C．deal | D．offer |
----- I had a really good weekend in the countryside.
----- ___________________________.
| A．Oh, that’s very nice of you | B．Congratulations |
| C．It’s a pleasure. | D．Oh, I am glad to hear that. |