单项选择题

You may use the room as you like （）you clean it up after wards.

A. so far as
B. so long as
C. in case
D. even if

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Tim will call me as soon as he （）my package.

A. receive
B. will receive
C. received
D. receives
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Dr. Smith, together with his wife and daughters,（）visit Beijing this summer.

A. is going to
B. are going to
C. was going to
D. were going to
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