单项选择题


A．until
B．unless
C．as
D．when
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单项选择题
A．pleasantB．excitingC．interestingD．funny
A．pleasant
B．exciting
C．interesting
D．funny
单项选择题
A．Excuse meB．Can I help youC．What's the matterD．I beg your pardon
A．Excuse me
B．Can I help you
C．What's the matter
D．I beg your pardon
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