单项选择题

When first ______ to the market, the toys didn't attract much attention.

A．introducing
B．introduced
C．was introduced
D．being introduced
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单项选择题
-- Did the policeman let you in-- No, ______ I told him who I was.
A．if
B．once
C．as though
D．even though
单项选择题
She has ______ to our views.
A．given out
B．given in
C．given away
D．given up
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