----She looks tired.
----Yes, she _________ for about twelve hours a day.
A．worksB．workingC．workD．is working
A

試題分析：句意：---她看起來(lái)很累。---是的，她每天工作大約十二個(gè)小時(shí) 。由句意可知時(shí)態(tài)是一般現(xiàn)在時(shí)，而且主語(yǔ)是第三人稱(chēng)單數(shù)，謂語(yǔ)動(dòng)詞要加-s或-es,故選A。
考點(diǎn): 考查動(dòng)詞時(shí)態(tài)的用法。
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