—Shall I invite Tom to my party?
—Yes,it will be nice if you_________.
| A．do | B．do invite |
| C．are | D．invited |
.---You see, I’m not good at English, you are poor in maths, and…
--- That’s _______ we’d better help each other.
| A．when | B．how | C．why | D．what |
I can’t fix my mind on my study, with the children ______ so noisily outside my window.
| A．playing | B．to play | C．played | D．being played |
.John sold the camera yesterday which his brother ________ him as a birthday present from Japan.
| A．has sent | B．had sent | C．was sending | D．would send |
.I can never forget the day ______ we worked together and the day _______ we spent together.
| A．when; which | B．which; when | C．what; that | D．on which; when |
--- Shall we call on Frank tonight?
---We’d better not. He is said ________ a lecture.
| A．preparing | B．to be preparing | C．to have prepared | D．having prepared |