题目内容

Security cameras have been _________ in the city center.

A. installing
B. to install
C. installed
D. to be installed

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This painting is _______ his work.

A. typical of
B. typical from
C. typical in
D. typical on

Working on an assembly line can be incredibly__________.

A. bored and tired
B. boring and tiring
C. exciting and interesting
D. excited and interested

The engine seems ________ well.

A. perform
B. to be performed
C. performing
D. to be performing

To ensure your interview is smooth and ___________, follow these five tips.

A. error-free
B. care-free
C. salt-free
D. tax-free

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