1.That machine musn't be used after 5.30 p.m.
2.An English-speaking will be held in Quang Trung school next month by the principal.
3.Mary and her little cousin were given two teddy bears on their birthday by Janet by coincidence.
4.The environment has been polluted by the pollution and chemicals by the factories.
5.The old house at the end of the road has just been sold by Mr.Jones.
6.A ring road is being built in the other side of the city.
7.Rubbish musn't be thrown very carelessly by the city dwellers.
8.These flowers should be kept in a warm sunny place.
9.The day of the meeting will be had to change again by the committe.
10.English is spoken all over the world.
11.Many houses will be bought in that area next year by a businessman.
12.The eight-form students is being interviewed at the moment by the reporter.
13.These boxes of chocolates have been kept for three weeks.
14.Our homework are corrected by our teacher on the blackboard everyday.
15.A supermarket will be built next year by the workers.