单项选择题

The price of seafood used to be much lower than now, ______

A．wasn't there
B．wasn't it
C．doesn't it
D．didn't it
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单项选择题
The typist checked the spelling carefully in order to ______ all the spelling mistakes.
A．abandon
B．diminish
C．eliminate
D．withdraw
单项选择题
My pain ______ apparent the moment I walked into the room, for the first man I met asked sympathetically: Are you feeling all right
A．must be
B．must have been
C．had been
D．had to be
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