25. Drivers … their cars in the middle of the road.A. must stop

B. must start

C. mustn’t go

D. mustn’t park

26. If you want people to be nice to you, you … nasty to them.

A. must be

B. must steal

C. mustn’t be

D. mustn’t steal

27. They … making all that noise. It’s disturbing people.

A. should stop

B. should watch

C. shouldn’t stop

D. shouldn’t watch

28. It’s getting late. I … home now or my mother will be angry to me.

A. should go

B. should tell

C. shouldn’t go

D. shouldn’t tell

29. We … letters that are addressed to other people.

A. should read

B. should think

C. shouldn’t read

D. shouldn’t think​