【題目】I have to see the doctor because I ________ a lot lately.

A. have been coughing B. had coughed

C. coughed D. cough

【答案】A

【解析】試題分析：考查動詞時態(tài)。句意：今天下午我必須得去看醫(yī)生因為我近期總是咳嗽。把握關(guān)鍵詞：recently，近期，用于現(xiàn)在完成時，排除B C 和D ， A. have been coughing現(xiàn)在完成進行時，強調(diào)動作持續(xù)不間斷，說明咳嗽的嚴重，所以A正確。

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