问题描述：
虚拟语气的一些练习题
4.Mary is ill today.If she _____，she ____ absent from school.
A.were not ill，wouldn't be
B.had been ill，wouldn't have been
C.had been ill，should have been
D.hadn't been ill，could be
5.Were I to do it，I ________ it some other way.
A.will do B.would do C.would have done D.were to do
6.I ________ him the answer ________ possible，but I was so busy then.
A.could tell，if it had been
B.must have told，were it
C.should have told，had it been
D.should have told，should it be
7.Without your help，we________ so much.
A.won't achieve B.didn't achieve C.don't achieve D.wouldn't have achieved
8.You didn't take his advice.________ his advice，you ________ such a mistake.
A.Had you taken，wouldn't have made
B.If you had taken，would make
C.Were you lo take，shouldn't have made
D.Have you taken，won't have made
4.Mary is ill today.If she _____，she ____ absent from school.
A.were not ill，wouldn't be
B.had been ill，wouldn't have been
C.had been ill，should have been
D.hadn't been ill，could be
5.Were I to do it，I ________ it some other way.
A.will do B.would do C.would have done D.were to do
6.I ________ him the answer ________ possible，but I was so busy then.
A.could tell，if it had been
B.must have told，were it
C.should have told，had it been
D.should have told，should it be
7.Without your help，we________ so much.
A.won't achieve B.didn't achieve C.don't achieve D.wouldn't have achieved
8.You didn't take his advice.________ his advice，you ________ such a mistake.
A.Had you taken，wouldn't have made
B.If you had taken，would make
C.Were you lo take，shouldn't have made
D.Have you taken，won't have made
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