85
9.
Mechanical engineers design tools that other … need for the work.
A. engineers B. scientists
C. managers
D. devices
10.
Mechanical engineers design, manufacture, and … mechanical systems.
A. respect
B. heat
C. combine
D. maintain
2. Fill in the blanks with the proper grammatical forms.
1.
It is a good question … .
A. to be discussed
C. was discussed
B. discuss
D. discusses
2.
It must … a very serious problem.
A. to be
B. be
C. been
D. to being
3.
We will continue … the tools.
A. to test
B. test
C. to be test
D. have tested
4.
We need … productivity.
A. increase
C. are increasing
B. to increase
D. have increased
5.
They have … mechanical systems.
A. maintain
C. to be maintained
B. to maintain
D. maintaining
6.
They proceed … on power-producing machines.
A. to be working
C. to have worked
B. works
D. worked
7.
New fields have … with the traditional fields.
A. to be combined
C. combining
B. combine
D. to combine
8.
Chemical engineering began … areas of nanotechnology.
A. to cover
C. cover
B. covered
D. to be covering
9.
Mechanical engineering tries … the core concepts of physics, mechanics,
etc.
A. to have used
C. to use
B. used
D. have use
10.
They should ... them in industrial equipment.
A. use
B. is using
C. to use
D. to be used
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