谁能给我解释一下这题为什么选B不选A?
---IamreallystruckbyyourEnglish.Youspeaksofluently.Haveyoubeenabroad?---Yes.I_____inL...
---I am really struck by your English.You speak so fluently.Have you been abroad?
---Yes.I_____in London for two years.
A.have stayed B.stayed 展开
---Yes.I_____in London for two years.
A.have stayed B.stayed 展开
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