改错。选出并改正。（5’）
小题1:The bridgebuiltby the workers three years ago.
A B C D ( ) ________
小题2: Watch TV too much is bad for your health.
A B C D ( ) ________
小题3:Shanghai is one of the biggest city in the world.
A B C D ( ) _________
小题4:Knives are usedforcut things.
A B C D ( ) _______
小题5: Help yourself to some bread, children.
A B C D ( ) _______
