选择题：Jane said she would rather__________when she was working on the project.

题目内容：

Jane said she would rather __________when she was working on the project.

A． not to be disturbed

B． not being disturbed

C． not be disturbed

D． not been disturbed

参考答案：

土壤有机质包括非腐殖质和_____两大类。

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A student of the 20th century is faced with a new situation because_______．A．he has to learn entirely

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