I have to see the doctor because I ________ a lot lately.
A．have been coughingB．had coughed
C．coughedD．cough
A
考查時(shí)態(tài)。句意：我得去看醫(yī)生，因?yàn)槲易罱恢笨人缘煤軈柡Αately表示“最近”，常與現(xiàn)在完成時(shí)或現(xiàn)在完成進(jìn)行時(shí)連用，此處表示在說話之前一直在持續(xù)的動(dòng)作，并且有可能持續(xù)下去，因此用現(xiàn)在完成進(jìn)行時(shí)。
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