was to blame．
| A．The parents as well as their child | B．Not the parents but their child |
| C．Neither the child nor his parents | D．Both the parents and their child |
The expert offered us another piece of advice,_____of great help to our program.
| A．I think it is |
| B．I think which is |
| C．which I think it is |
| D．which I think is |
— Where is John? — He _____ in the library.
| A．should be | B．must be | C．can be | D．must have been |
. — Please don’t make a noise.
— _____. I’ll be as quiet as a mouse.
| A．Yes, I won’t | B．No, I won’t | C．No, I will | D．Yes, I will |
I didn’t see her in the meeting room this morning. She _____ at the meeting.
| A．mustn’t have spoken | B．shouldn’t have spoken |
| C．needn’t have spoken | D．couldn’t have spoken |
It’s a fine day. Let’s go fishing, _____.
| A．won’t we | B．will we | C．don’t we | D．shall we |