1.-Why are you in a hurry?-( )my mother is ill,I have to take her to hospital.A.For B.Since C.As D.Because2.-Hello,you look tired today.-Yes ,Ispent too late yesterdayevening.I( )my homework and forgot the time .A.was doing B.has done C.have done希望能给讲解一下.
问题描述：
1.-Why are you in a hurry?
-( )my mother is ill,I have to take her to hospital.
A.For B.Since C.As D.Because
2.-Hello,you look tired today.
-Yes ,Ispent too late yesterdayevening.I( )my homework and forgot the time .
A.was doing B.has done C.have done
希望能给讲解一下.
答
1.D
because 回答why的提问
2.A
我一直在做作业以致于忘了时间
答
D,why的回答是because
A,forgot是一般过去式，所以用现在过去式，was doing.
答
1.D.(WHY是对BECAUSE 的提问)
2.A.(在英语中一句话一般时态要一致.如果观察可以发现句子落在:yesterday evening这个点上.表示在那时那刻,我[正在]做作业,所以要用过去进行时)
答
D
why一般配B靠石
A
yesterday evening。持续时间的动作用进行时