1) I would like to propose that from sixty to ninety minutes each evening all television broadcasting in the United States be prohibited by law.

　　2) You should take advantage of this opportunity and try to make good impression on them.

　　3) Neither believe nor reject anything because any other person has rejected or believed it.

　　4) Greater efforts are needed before we can attain our goal of economic reform.

　　5) A country should protect its natural resources by fighting against waste.

　　6) Sometimes even an one-day vacation from work is enough to allow us to regain our strength and return to work fit and ready to do a better job.

　　7) If we concentrate our efforts on improving quality， our products will certainly be more competitive on the world market.