写成should be allowed to do句形1.I don't agree that you can get the ears pierced.2.we don't think teengers can smoke.3.They don't agree the train can run across the center of the city.

1.I don't agree that you should be allowed to get the ears pierced.
2.We don't think teenagers should be allowed to smoke.
3.They don't agree the strain should be allowed to run across the center of the city.

You shouldn't be allowed to get the ears pierced.
Teenagers shouldn't be allowed to smoke.
The train shouldn't be allowed to run across the center of the city.

1 You should not be allowed to get your ears pierced.2 Teenagers should not be allowed to smoke.3 The train should not be allowed to run across the center of the city.