Anyone applying for a visa to China __________(require) to have finger prints taken.

We regard customer complaints as an opportunity to _____ our service.

A. bring
B. receive
C. improve
D. obtain

We took advantages of its sports facilities ______ staying at the hotel.

A. although
B. while
C. until
D. unless

It has been decided that Mr. Li will ______ the company when the CEO retires.

A. put off
B. call for
C. bring about
D. take over

The study shows that some students have difficulty _____long English texts.

A. reading
B. read
C. to read
D. to be read