问题描述：
8.我们班的学生人数增至77.
The number of the students of our class _________ ________ to seventy-seven.
20.外面刮风,穿上你的大衣.
It’s windy outside,___________ _____________ your coat,please.
The number of the students of our class _________ ________ to seventy-seven.
20.外面刮风,穿上你的大衣.
It’s windy outside,___________ _____________ your coat,please.
问题解答：
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