My sister __________ I are tidy, __________my brother isn’t.
A．and; but B．and; and C．but; but
答案
A
【解析】
句意：我妹妹和我都很爱干净，但我弟弟不是这样。考查连词。第一个空后面是主格代词I，与My sister是并列关系，共同作主语，所以用and连接。第二个空，根据句子前面是说tidy（整洁的），而后面是my brother isn't，因此前后句是转折关系，所以用连词but；故答案选A。
Ted has ten soccer balls, _____he doesn't play them．
A．and B．with C．but D．of
Don’t fight in class __________don’t run in the hallways．
A．or B．so C．but D．and
Susan is good-looking，__________she’s a little hit short．
A．so B．with C．or D．but
Jane, please turn off the lights ______ you leave the classroom.
A．after B．before C．until D．but
--Hurry up! The bus is coming．
--Wait a minute．Don't cross the street ________ the traffic lights are green．
A．until B．after C．while D．since
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