1．The website provides students with free information about how to choose a good college.
2．Nobody will be admitted to the research center without permission/being_ permitted(permit)．
3．They came up with several solutions (solution) to air pollution at yesterday's meeting.
4．Make sure you switch off all the lights before you leave.
5．In this resort you can enjoy all the comfort and convenience(convenient) of modern tourism.
Ⅱ.单句改错
1．There is a limit to people's life, but no limit to learn knowledge.
learn→learning
2．They had to bring the project under the construction to an end because of lack of money.去掉第二个the
3．The news was soon got around that several people had been arrested for selling drugs.去掉was
4．Smoking does great harm to our health.In no time is smoking allowed in public places.In→At
5．Not only the two boys but also their sister attach great importance to the piano lessons.attach→attaches
