My mind wasn't on what he was saying，so I'm afraid I ________ half of it.
| A．was missing | B．had missed |
| C．will miss | D．missed |
An accident happened at ______crossroads a few meters away from_____bank .
| A．a ;a | B．/;a | C．/;the | D．the ;/ |
----What do you suppose made her worried ?
----______a gold ring .
| A．Lose | B．Lost | C．Losing | D．To lose |
----Why ? Where’s the key to the meeting room?
----Dear me! You ______it in the taxi!
| A．had never left | B．didn’t leave | C．never left | D．haven’t left |
He has read lots of books,_____that he is still young.
| A．considering | B．considered | C．being considered | D．to sonsider |
Some of the students have already learned enough English to _______a conversation with an English speaker.
| A．go on (vi.) | B．carry on (vt. Vi.) | C．keep on | D．hold on |