单项选择题

After performing a successful operation, the doctor at last pulled the patient ______.

A. back
B. in
C. up
D. through
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单项选择题
The atmosphere is as much a part of the earth as ______ its soil and the water of its lakes, rivers and oceans.
A. are
B. is
C. do
D. has
单项选择题
______ you as soon as I know what.
A. I'll phone, does happen
B. I'll phone, has happened
C. I am phoning ,happens
D. I am going to phone... happens
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