【題目】Betty ________ a math teacher since 2016. She likes the work very much.

A.has beenB.isC.will beD.was

【答案】A

【解析】

句意:貝蒂自2016年以來一直是一名數(shù)學老師。她非常喜歡這份工作。

考查動詞時態(tài)辨析。is是,was是其過去式,will be是一般將來時結(jié)構(gòu),has been是現(xiàn)在完成時結(jié)構(gòu)。根據(jù)“since 20162016年以來,是一段持續(xù)的時間,可知需用現(xiàn)在完成時,故選A

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