Mr.White works in an import and export company,but he_____for this industrial 
fair,since he is on leave.?
A．has workedB．works?
C．has been workingD．is working?
D   
 考查動(dòng)詞的時(shí)態(tài)。本題選擇現(xiàn)在進(jìn)行時(shí)表示“臨時(shí)、暫時(shí)做某事”。句意為：懷特先生在一家進(jìn)出口公司工作，但是他在休假期間，在為這次工業(yè)展銷(xiāo)會(huì)工作。
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