We ______ ; we followed the boss into the hall as his guests. How lucky we were!
| A．didn’t need to wait | B．needn’t have waited |
| C．must have waited | D．couldn’t have waited |
--Did you tell Jane that the college had allowed her to work on a part-time work and study program this term?
--Oh, no, I forget. I ___ her now.
| A．will call | B．will be calling |
| C．call | D．am to call |
The teacher raised his voice ____ all the students could hear him clearly.
| A．in case | B．so that |
| C．even though | D．so as to |
Check your homework to avoid ______ mistakes again.
| A．make | B．making | C．to make | D．made |
First of all, please _____ me to introduce myself to you．
| A．make | B．agree | C．let | D．allow |
He didn’t catch the first train. That’s ____ he didn’t attend the meeting.
| A．because | B．how | C．why | D．when |