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--- Tommy, your mum has been out without glasses!
--- Well, take it easy. _______ she is back home for them.
A.It is long before thatB.It won’t be long since
C.It won’t be long beforeD.It will be long before
C

试题分析:考查固定句式。固定句式:It be 一段时间 before…一段时间以后某事才发生;如果before后面使用一般现在时,前面的主语使用将来时;如果before后面使用一般过去时,前面也使用一般过去时;本题横线后面使用了一般现在时,前面使用了将来时。句意:—Tommy,你妈妈肯定没有戴眼镜就出去了。—不要着急,不就以后她就会回来取眼镜的。说明前半句应该使用否定句。故C正确。
点评:固定句式:It be 一段时间 before…一段时间以后某事才发生;如果before后面使用一般现在时,前面的主语使用将来时;如果before后面使用一般过去时,前面也使用一般过去时;
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