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單項選擇題

There are many cities（）very fast.

A.expand
B.which expand
C.which expanding
D.to expand

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單項選擇題

Just over 70% of people（）for the survey said the net had become essential.

A.questioning
B.questioned
C.question
D.to question

單項選擇題

There are often advertisements（）to other websites on the Internet.

A.lead
B.led
C.leading
D.to lead

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