do your homework now.you must ------before class.(hand it in

问题描述:

do your homework now.you must ______before class.(hand it in)
1个回答 分类:英语 2014-11-15

问题解答:

我来补答
hand it in直接用原形,因为前面是must,情态动词后面接动词原形
再问: hand them in 可以吗
再答: 好像不行,因为homework一般是不可数名词,不用them代替的
 
 
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