题目内容
Since the Internet is a very useful tool we should ______ it in our study.
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The little boy was still ____ his father's return when the clock struck eleven.
As usual, she helped her mother clear away the dishes and ____ the room.
Sometimes children have trouble separating fact from ____ and may believe that such things actually exist.
To increase our working ____, it is necessary to take advantage of every moment we have.
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