________ we do morning exercises every day _________ us a lot of good.A．If;doB．
题型：不详难度：来源：
________ we do morning exercises every day _________ us a lot of good.| A．If;do | B．That;do | C．Whether;does | D．That;does |
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答案
| D |
解析
| 本题考查主语从句和主谓一致。that引导主语从句，在从句中不作成分，没有意义，但不能省略，单个的主语从句作主语谓语动词通常是单数。 |
举一反三
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