选A.
let是使役动词,后面加动词原形.someone是单三，为什么wait不加s因为let是使役动词，后面要加动词原形的，跟someone没关系。let sb. do sth.词组。让某人做某事。do代表动词原形
I'll let someone ____for you downstairs. A.wait B.waiting C.to wait D.waited
I'll let someone ____for you downstairs. A.wait B.waiting C.to wait D.waited
英语人气：729 ℃时间：2019-08-18 18:08:41
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