家具使用功能的设定还需考虑主要功能与辅助功能(附加功能)转换的便捷性。
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These two ______ are my brother’s sons.
A. boys
B. boies
C. boyes
Are these two ______ yours?
A. boxs
B. box
C. boxes
I took two ______ with me to read on the train.
A. bookes
B. books
C. book
There are two______ on the road.
A. sheep
B. sheeps
C. sheepes