what they need at present ____(be)science and technology?why the answer is are
sorry the answer is IS.Who can tell me why?
人气：256 ℃ 时间：2020-05-20 21:05:08
解答
what they need at present是主语从句,从句或某短语作主语时,谓语动词用单数形式
如：Doing exercises is good for our health.每天做早操对我们的健康有好处.
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