( ) When Tom saw a pen on the ground, he stopped . A. to pick it up B. picking it up C. to——青夏教育精英家教网—

摘要：( ) When Tom saw a pen on the ground, he stopped . A. to pick it up B. picking it up C. to pick up it D. pick it up

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A. to pick up it　　　　　　　　　　　　 B. pick it up

C. to pick it up　　　　　　　　　　　　 D. pick up it

A. to pick up it　　　　　　　　　　 B.pick it up　　　　 C.to pick it up　　　　　　 D.pick up it

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