1.We investigated other companies in the market to discover ______ they handled complaints from their customers.
A. that
B. how
C. what
D. where
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2.The Human Resources Department, as well as the other departments, will have its budget ______ to $2 million this year.
A. to reduce
B. reduce
C. reduced
D. reducing
3.The team is going out to hold a party tomorrow after it ______ the project.
A. completes
B. completed
C. will complete
D. will have completed
4.The new employees had to go over the safety regulations several times ______ they understood them.
A. since
B. before
C. unless
D. when
5.By the end of next year, I ______ for the company for 10 years.
A. work
B. am working
C. had worked
D. will have worked