i have bought a new watch .--where and when ___you_____ it

问题描述:

i have bought a new watch .--where and when ___you_____ it
A.did ;buy B.do ; buy C.have ;bought D.will; buy

A
根据句意已买回来了,即动作已过去,排除B D ,而WHEN 不能与完成时连用,再排除C
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