—Doing eye exercises works well in _______ our eyesight.   —So it does.

A. to protect
B. protected
C. protects
D. protecting
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科目：初中英語 來源：模擬題 題型：單選題

—Doing eye exercises works well in _______ our eyesight.   —So it does.
[     ]
A. to protect
B. protected
C. protects
D. protecting

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