单项选择题

______ blood if you can and many lives will be saved.

A．Giving
B．Give
C．Given
D．To give
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单项选择题
—I'11 be away on a business trip. Would you mind looking after my cat —Not at all.
A．I've no time
B．I'd rather not
C．I'd like it
D．I'll be happy to
单项选择题
I don't think Jim saw me; he ______into space.
A．just stared
B．was just staring
C．has just stared
D．had just stared
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