--Did you write to Mary last month? --No, but I’ll_______her over Christmas Day.

　 A. be seen 　 B. be seeing

　 C. have seen 　 D. have been seeing

I order not to be disturbed, I spent three hours ___ in my study.

A. locking　　　　 B. locked　　　　 C. to lock　　　 D. being locked

The new swimming pool is　　　　 the old one.

　 A．the two thirds size of　 　 　　　 B．two thirds as big as

　 C．two thirds as much as 　　　 　　　 D．a(chǎn)s two thirds big as

Ten years had passed. I found she had _________.

A. a little white hair　 B. a few white hairs　 C. many white hair　 D. much white hair

With the help of high technology, more and more new substances ______ in the past years.

A. discovered　 　　　 B. have discovered　

C. had been discovered 　　　 D. have been discovered

— I think he is taking an active part in social work.

—I agree with you 　　　　 .

A. in a way　　　 　 B. on the way　　 　　　　 C. by the way　 　　　 D. in the way

The thief stole a new bike in the shop，________.

A．risked to be caught　B．risking to be caught

C．risking being caught D．risking catching

Her _______ son cannot _______ properly.

A. six-year-old, add up to.　　　 B six years old,　 add to

C. six-years-old, add up.　　　　 D. six-year-old, add up.

—It was________of Jack to turn off the radio when I was sleeping in the bedroom.

—So he was.

A．reasonable 　　　　 B．sensible

C．considerate 　　　　 D．generous

-----How did you learn to speak English so well?

　 ----By practising speaking_________I had a chance.

A. wherever　 B. whenever　 C. whatever　 D. whichever