I would have come earlier, but I _____ that you were waiting for me.
| A．didn’t know | B．hadn’t known |
| C．haven’t known | D．wouldn’t have known |
— 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 |
— May I stop here? — No, you _____.
| A．mustn’t | B．might not | C．needn’t | D．won’t |