题目内容

The box is full. please _____ it.

A. empty
B. sharpen
C. fill
D. full

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This room is not clean. It is very_____.

A. tidy
B. untidy
C. clean
D. not dirty

_____ not ______ the refrigerator.

A. did, clean
B. Does, clean
C. Do, clean
D. do, clean

Put these _____ in the wardrobe.

A. clothes
B. cloth
C. cloths
D. chothing

在室温下,相同浓度的蔗糖溶液与食盐水溶液的渗透压相等。

A. 对
B. 错

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