你以为他们每个月花多少钱？

How much do you suppose they would spend every month?

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他们多经常购物？他们每个月购物一次。

How often do they shop? They shop once a month.

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学生依次进行了英语演讲，老师要求他们每个月上缴两篇散文。

The students gave English speeches in turn. And the teacher asked them to turn in two essays every month.

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They have something every month called Lates at the Science Museum.

每个月他们会展出一些叫做科学博物馆新品的东西。

神奇的博物馆 - SpeakingMax英语口语达人