{01}It is known to all that ____ you exercise regularly, you won’t stay healthy.
A.because
B.unless
C.now that
D.in case
解析: 试题分析:连词辨析。A因为;B除非,如果..不;C既然;D以防;句意:众所周知,如果你不经常锻炼,你就不会保持健康。故B正确。 点评:本题的4个连词都是考试中常考的连词,特别注意unless,该词在使用的时候要改成if…not…。这样更便于学生的理解。 本题选B。 {02}_______ you want to change for a single room, you’ll have to wait for a while.
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