问题
选择题
. The tyre of your car is flat. It needs ______.
A．blowing off
B．blowing up
C．blowing out
D．blowing over
答案
答案：B
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. The tyre of your car is flat. It needs ______.
A．blowing off
B．blowing up
C．blowing out
D．blowing over
答案：B