21. The police are supposed to do something about these people.
I wish ___________________________________________
22.I wish I didn't have to get up early tomorrow.
I will _____________________________________________
23.What a pity! He turned down my offer.
If ___________________________________________
24.Without your help, l couldn't have finished it on time.
I could _______________________________________
25.It was raining. That's the only reason I didn't take the children to the beach.
But for .
26.They used closed-circuit television. That's how they spotted the shop-lifter.
Had it .
27.My friend advised me to sell it.
My friend said if I .
28.I live a long way from the centre; that's why I am always late for work.
Were I .
29.We didn't visit the museum because we hadn't time.
Had we .
30.Tom's father was on the Board. That's the only reason he got the job.
But for .
