【题目】Bad weathers these days! Yesterday ________ so hot, but today ________ too cool. ( )
A.is, is B.was, is C.is, was
【答案】B
【解析】
第一空时间词yesterday,故答案用过去式,第2空today是一般现在时标志词,故答案填现在时形式,故选答案B。