Edison had built a chemical lab of ___ when he was very young.
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A
himself
B
him
C
itself
D
his own
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The company, _____ him, is beginning to develop rapidly.
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A
in the charge of
B
in charge of
C
in the control of
D
in control of
Don’t be angry with him. He didn’t make the mistake _______.
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A
in turn
B
on purpose
C
by accident
D
in total
—Do you have ________ difficulty working out the problem?—Yes. It is ________ me.
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A
no; easy for
B
some; within
C
any; within
D
any; beyond
Scientists are convinced______ the positive effect of laughter______ physical and mental health.
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A
of ; at
B
by ; in
C
of ; on
D
on ; at
It was indeed an accident, but you make it sound as if I did it______!
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A
on my own
B
by accident
C
on purpose
D
by hand