题目内容
( ) 3. Surfing the Internet is fun, ____sometimes it's also a waste of time.
A. but B. and
C. so D. because
3. A前后句为转折关系。
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题目内容
( ) 3. Surfing the Internet is fun, ____sometimes it's also a waste of time.
A. but B. and
C. so D. because
3. A前后句为转折关系。