After ten years of research, he finally _______a new kind of camera. [ ]A

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After ten years of research, he finally _______a new kind of camera.    [     ]
A. discovered
B. invented
C. found
D. made

答案

举一反三

She     _    that someone put a card and some sweets on her desk.    [     ]
A. noticed
B. looked
C. watched
D. seen

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Chinese _____chopsticks____   have meals.    [     ]
A. use; to
B. are used; to
C. use; with
D. are used; for

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If you think it isn"t sweet enough,  you can   _      some sugar _        it.         [     ]
A make, on
B. leave, in
C. keep, in
D. sprinkle, on

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After ten years of research. he finally ______ a new kind of camera. [     ]
A. discovered
B. invented
C. found
D. made

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I"m sorry I            my English book at home.      [     ]
A. forgot
B. left
C. put
D. had

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