题目内容

A．writtenB．writeC．writing

A. written
B. write
C. writing

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A．allB．everyC．any

A. all
B. every
C. any

What can you do if the international line is engaged？

A. Call back outside office hours.
B. Make a “person-to-person” call.
C. Book a call.

A．beforeB．duringC．within

A. before
B. during
C. within

A．throughB．byC．of

A. through
B. by
C. of