—Hi, Johnson, any idea where Susan is?
—It's class time, so she in the classroom now.
| A．can be | B．must have been | C．might have been | D．should be |
----Tomorrow is a holiday. Why are you doing your homework?
-----I am doing these exercises now so that I won’t have _____ on Sunday.
| A．it | B．them | C．for | D．to |
Why! I have nothing to confess. ____you want me to say.
| A．What is it that | B．What it is that | C．How is it that | D．How it is that |
---what was the party like?
---Wonderful. It’s years _____ I enjoyed myself much.
| A．after | B．before | C．that | D．sinc |
It was _____ that caused him to serve dinner an hour later than usual.
| A．we being late | B．our being late |
| C．we were too late | D．because we were late |
I don’t know ____ that you stay here.
| A．how long it is | B．how long is it | C．it is how long | D．is it how long |