There was no airline _____ the two cities in the old days.
A. among
B. between
C. in
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What time did Mrs. King come back?---____ nine o'clock yesterday morning.
A. On
B. In
C. At
Students needn't go to school ____ Sundays.
A. on
B. in
C. at
Thank you very much ____ taking the message _____ me.
A. for, at
B. to, to
C. for, to
These trousers are different ____ those over there.
A. of
B. from
C. to