do your homework now.you must ______before class.(hand it in)
do your homework now.you must ______before class.(hand it in)
英语人气：571 ℃时间：2019-08-20 13:24:18
优质解答
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hand them in 可以吗好像不行，因为homework一般是不可数名词，不用them代替的
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