It is very difficult, for the time being, to ________ how much money is needed. ( 章节：4 难度：3)
- A、account
- B、sign
- C、range
- D、estimate
正确答案:D
答案解析:有
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It is very difficult, for the time being, to ________ how much money is needed. ( 章节：4 难度：3)
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