-----Why didn't you ask him for help?

-----______, but he was working on his computer．

A．I had wanted　　 B．I had wanted to　 C．It's hard to say　 D．Don't mention it

I can meet you at eight o'clock; _____ you can call for me.

A. incidnetally 　B. actually 　　　C. alternatively 　D. accordingly

The old couple preferred a flat in a small town to ____ in so large a city as New York.

A．one　　　　 B．it　　　　　 C．this　　　　 D．that

In recent years________global warming is becoming________concern for people all over the world.

A．the；the 　 B．/；a　　　 C．/；/ 　 D．the；/

______ England improve their game, they’re going to lose the match.

　　 A. If 　 　 B. When　 C. Unless 　 D. Whether

The gentleman _________ you told me yesterday proved to be a thief.

A. who　　　　 B. about whom C. whom　　　 D. with whom

Over the past 30 years,China　　　 significant changes in comprehensive national strength thanks to the reform and opening-up policy.

　 A.witnessed　　　 B.were witnessing

C.has witnessed　 D.will have witnessed

---- Henry found a policeman at the zebra crossing and handed the mobile phone over to him.

　 ---- But he ______ have waited at the place until the owner returned.

　 A. shouldn’t　　 B. could　　　　 C. would　　 D. must

He is one of the boys who _____ here on time. He is the only one of the boys who _____ here on time.

   A. has come; have come    B. have come; has come  

C. has come; has come     D. have come; have come

Such a person like him is difficult to be dealt with.