【題目】There ______ robots in people’s homes in 30 years.

A. is B. are C. be D. will be

【答案】D

【解析】

句意:在30年后人們的家里將會(huì)有機(jī)器人。根據(jù)in 30 years可知此處用一般將來(lái)時(shí),故用there will be,故選D。

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