Mr. Brown is 70 this year. Although he is very old, ____ he works very hard.
#58159
A
and
B
but
C
so
D
/
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—Would you mind my___________ here?—___________. We can’t stand it!
#55152
A
smoke, OK.
B
smoking, Certainly not.
C
smoking, Of course.
D
smoking, You’d better not.
Rick has learned a lot about Chinese culture _____ he came to China.
#55330
A
before
B
when
C
until
D
since