单项选择题

Petrol is manufactured from the ______ oil we take out of the ground.

A．crude
B．raw
C．rough
D．tough
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单项选择题
Mrs. Brown is so ______ about her housework that servants will not work for her.
A．special
B．especial
C．peculiar
D．particular
单项选择题
The plane ______, its bombs exploding as it hit the ground.
A．smashed
B．clashed
C．struck
D．crashed
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