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One of the requirements for a fire is that the material _________ to its burning temperature.

A. is heated       B. be heated     C. would be heated   D. shall be heated

Compared with his sister, Jerry is even more ________ to, and more easily troubled by, emotional and relationship problems.

A. skeptical        B. addicted                       C. available                       D. sensitive

The thing that _______ is not whether you fail or not, but whether you try or not.

A. matters          B. cares     C. considers      D. minds

His aunt’s letters ________ memories of those beautiful days when they used to live together in his hometown. 

A. call at    B. call for  C. call on   D. call up

--- Could you take a message for Mr Brown?

  --- Certainly. I ________ him about something else in any case. So it _______ any bother.

A. may see; isn’t        B. see; won’t be         C. will see; isn’t D. will be seeing; won’t be

Don’t take his remarks too seriously. He was so sad that I don’t think he really _________ what he was saying.

A. knew    B. knows   C. was knowing D. had known

Without the friction (摩擦力) between feet and the ground, people would ______ be able to walk.

A. in no time     B. by all means  C. on any account      D. in no way

With more and more forests disappearing, today the public is much concerned about the way _________.

A. nature is being ruined  B. which nature is ruined 

C. on which to ruin nature        D. of nature to be ruined

______ for the breakdown of the school computer network, Alice was in low spirits.

A. Blaming         B. Blamed C. To blame        D. To be blamed

“Sorry” is the hardest word to say sometimes. _______ you know you’ve done something wrong, or something inappropriate, it takes courage to say sorry.

A. Only if       B. Even if                       C. If only                       D. As if