题目内容

I wrote a letter congratulating him () his appointment as the director of the department.

A. on
B. in
C. with
D. to

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Before the age of the Internet, we used to () our holiday through travel agents.

A. book
B. having booked
C. booking
D. have booked

Since the new technilogy was introduced last month,we () in speeding up production.

A. succeed
B. succeeded
C. have succeeded
D. willsucceed

As a pubilc relation officier, you should know your customers () detail.

A. in
B. on
C. for
D. to

() you choose to contact us, you can expect our efficient and helpful advice.

A. No sooner than
B. Ever since
C. No matter how
D. Even though