—I'm sorry I stepped outside for a smoke. I was very tired.
—There is no________for this while you are on duty.
| A．reason |
| B．excuse |
| C．cause |
| D．explanation |
“When did he leave the classroom?” “He left _______ you turned back to write on the blackboard.”
| A．the time | B．the moment |
| C．until | D．since |
“Shall Mary come and play computer games?” “No, _______ she has finished her homework.”
| A．when | B．since |
| C．unless | D．as soon as |
The man you referred to _____ just now.
| A．comes | B．come |
| C．coming | D．came |
We decided not to climb the mountains because it was raining ________.
| A．badly | B．hardly |
| C．strongly | D．heavily |
He has changed a lot. He _______ not what he _______.
| A．is, is | B．was, was |
| C．is, was | D．was, is |