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Our government has decided to give________to those environmentally?friendly businesses in many aspects.

A．profit 　　　　　B．interest　　　　 C．preference 　　　D．a(chǎn)dvantage

While building a tunnel through the mountain, _____.

A. the workers discovers discovered

B. an underground lake was discovered

C. there was an underground lake discovered

D.the lake was discovered underground

When the space ship was ____, I could really feel the high gravity.

A. lifting off 　　　 B. landing　 　 C. sending way 　 　　D. giving a lift

Ever since the Greens moved to the country a year ago, they ________ better health.

　　A. are enjoying　　　 B. have been enjoying

　　C. could have enjoyed　D. had enjoyed

Finally the two companies reached an ______(協(xié)議) successfully.

He a________ to me for stepping on my foot.

---Tom, what about going for a picnic in the national park tomorrow?

---________. It is just opened to the public. I am looking forward to it.

A. Up to you 　 B. That's all right 　 C. No kidding 　 　 D. Sounds fantastic

I didn’t know his address. ________, I ______ the note to him in person.（ ）

A. Were I to know; would have sent　　　 B. Should I know; would have sent

C. Had I known; would have sent　　　　 D. Would I have known; had sent

I _____ to help you to do homework but I couldn’t spare any time. I _____ a composition last night and I’ll finish it today.

A. wanted; wrote　　　　 B. had wanted; was writing　

C. have wanted; wrote　　 D. wanted; have been writing

　 you want me to fire you，I suggest you stop wearing sports clothes at office．

　 A．If　　　　　 B．Since　　　 C．Unless　　 D．Until