I told him to______and spend a few days with us if he passed by.A.drop onB.drop downC.drop

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I told him to______and spend a few days with us if he passed by.

A.drop on

B.drop down

C.drop in

D.drop out

请帮忙给出正确答案和分析,谢谢!

热搜:关于氨基酸代谢错误的论述是_________。