【題目】Mr Jiang isn’t as busy as before because there no home robot to help him

A. used to beB. may beC. used to haveD. may have

【答案】A

【解析】

句意:江先生不如以前忙,因為過去沒有家用機器人來幫助他。used to be過去是, may be可能是, used to have過去有,may have可能有。There be句型,表示存在,意為。根據(jù)Mr Jiang isn’t as busy as before可知此處指的是過去,故用used to be。故選A。

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