6. He( )his previous best performance in the 1000 meters.

　　A. improves

　　B. improves on

　　C. betters

　　D. proves

　　7. I( )to interrupt a man when he’s busy working.

　　A. envy

　　B. hate

　　C. admire

　　D. improve

　　8. he was astonished( )what he found.

　　A. at

　　B. to

　　C. for

　　D. on

　　9. They made no effort to hide their amusement( )I produced a packet of sweets from my pocket.

　　A. whatever

　　B. wherever

　　C. whoever

　　D. whenever

　　10. I had hoped to get $1000 for my old car but had to( )a lot less.

　　A. settle down

　　B. settle in

　　C. settle for

　　D. settle on

　　答案　6. B7. B8. A9. D10. C

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（实习编辑：高奕飞）