English Grammar in Use Fifth Edition

Additional exercises
20
Complete the sentences.
1 
Lisa is tired all the time.  She shouldn’t go to bed so late. 
If Lisa 
didn’t go
 to bed so late, she 
wouldn’t be
 tired all the time. 
2 
It’s getting late.  I don’t think Sarah will call me now. 
I’d be surprised if Sarah 
 now.
3 
I’m sorry I disturbed you.  I didn’t know you were busy. 
If 
 you were busy, I 
 you.
4 
There are a lot of accidents on this road.  There is no speed limit.
There 
 so many accidents if 
 a speed limit.
5 
You didn’t tell me about the problem, so I didn’t try to help you. 
If  
 the problem, 
 you.
6 
It started to rain, but fortunately I had an umbrella. 
I 
 very wet if 
 an umbrella.
7 
Mark failed his driving test.  He was very nervous and that’s why he failed. 
If he 
 so nervous, he 
 the test.