1. The Jet engine has had
C.an important part
D. great significance
A. a great impact
B. an important affects
2. Do you know how this machine work?-All you do is just .. . this button and it starts automatically.
C. press
D. switch
A. pull
B. put on
3. You can't use the washing machine today. It's
C. breaking down
D. wrong
B. out of order
A. out of work
Loga
Sinh Học lớp 12
