题目内容

If you go to work by bicycle, you will get lots of ______.

A. exercise
B. exercises
C. exercising
D. exercised

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高速公路、一级公路每盘水泥混凝土细集料计量允许偏差（）%。

Things are now better instead _____ worse.

A. with
B. of
C. on
D. to

高速公路、一级公路每盘水泥混凝土粗集料计量允许偏差（）%。

The window needs _______.

A. cleaning
B. to clean
C. cleaned
D. cleans