Yuan Longping _____ an idea for a hybrid rice in the 1960s. [ ]A. caught up

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Yuan Longping _____ an idea for a hybrid rice in the 1960s.  [     ]
A. caught up with
B. fell behind
C. came up with
D. put up with

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举一反三

I"m tired(累了). Let"s ______.[     ]
A. have a break
B. get up
C. go to school
D. play basket ball

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We _____ bed at nine o"clock in the evening. [ ]
A. go to
B. goes to
C. go
D. goes

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It"s very cold outside. You"d better _____ your coat when you go out. [     ]
A. dress
B. put on
C. wear
D. have on

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Sally,            your sunglasses. The sun is so bright.[     ]
A. put on
B. put up
C. put away
D. put down

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Let me ______ you something ______ the tiger.?[ ]
A.tell; to
B.tells; with
C.tell; about

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