I haven't finished my composition. I ________ for two hours and a half.

A. have written it B. have been writing it

C. wrote it D. am writing it

 

B

【解析】

試題分析： 考查動詞的時態(tài)。句意：我還沒有完成我的作文，我已經(jīng)寫了二個半小時了。根據(jù) I haven't finished my compositio可知這動作還沒有完成，再根據(jù) for two hours and a half可知選B項。

考點 : 考查動詞的時態(tài)

 

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