单项选择题

Are you positive that there's no mistake

A．rational
B．reasonable
C．certain
D．bound
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单项选择题
He is assigned to oversee the production of the assembly lines.
A．supervise
B．watch
C．suspect
D．predict
单项选择题
We were astonished to hear that their football team had won the champion.
A．amazed
B．amounted
C．amused
D．approached
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