________ many times, he finally understood it.
 A. Told     B. Telling    C. Having told    D. Having been told

The secretary worked late into the night, ___________ a long speech for the president.
A. to prepare B. preparing C. prepared D. was preparing

__________ around the famous museum, we were taken to visit the Theme Park about five kilometers out of the city.

　 A. Having shown B. Being shown　 C. To be shown　 D. Having been shown

Seldom in my life ____ such a powerful book..

A.have I read B. I have read C.had I read D. I had read

_________, I've never seen anyone who's as capable as Kate.
A. As long as I have travelled        B. Now that I have travelled so much
C. As I have travelled much         D. Much as I have travelled

Nokia, the world's largest mobile phone maker, said that over the first nine months of the year it _____ 23 million handsets in China, an increase of 77 percent _____ the same period a year ago.

A. had sold; compared to　　　　　 B. has sold; compared to

C. sold; comparing with　　　　　　 D. was selling; compared with

----You can’t finish the book in less than an hour, I suppose?

-----________.

A. Yes, I’m sure I can 　 B. No, hardly

C. Sorry, I can’t 　 　　 D. I don’t think I can

The living room is clean and tidy, with a dining table already ________ for a meal to be cooked.

A. laid 　　　　　　 B. laying 　　　 C. to lay　 　　　　 D. being laid

It’s the third time __________ late this month.

A. that you arrived 　　　　B. when you arrived

C. that you’ve arrived　　 D. when you’ve arrived

Scientists are convinced ____ the positive effect of laughter ____ physical and mental health.

A. of; at　 B. by; in　 C. of; on　　 D. on; at