单项选择题

Our public transportation is not sufficient for the need of the people in our major cities.（）

A. additional
B. efficient
C. excessive
D. adequate

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It takes about an hour to get there, allowing for possible traffic delays.（）

A. attending
B. taking account of
C. in the charge of
D. taking charge of
单项选择题
Our company is collaborating with a Japanese firm in designing a new computer.（）

A. merging
B. allocating
C. communicating
D. cooperating
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