【B11】
At the same time
B. On the other hand
C. For example
D. In another word
【B1】
A. in
B. at
C. to
D. of
When is it cheaper to make an international call？
A. l0 a.m.
B. 5 p.m.
C. 11 p.m.
D. 8 a.m.
What can you do if the international line is engaged？
Ask the operator to call you back later.
B. Make a "person-to-person" call.
Call back outside office hours.
D. Wait and call again when the line is free.
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