题目内容

I _________ pay until the end of the month.

A. don't have to
B. doesn't have to

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There are _______ children in this kindergarten.

A. many
B. much

How much _?It is seven pounds twenty.

A. is; it
B. are; they

供水水文地质勘察工作划分为地下水、、和四个阶段。

是指对工作区进行地貌调查、地层调查、地质构造调查、泉与水井等调查，并将调查与实测资料绘制水文地质图等工作的总称。