1.A success on this experiment will make a big difference on our project.
2.Even though they have nothing in common,they are still best friends.
3.The firm is not giving a response on the payroll issue to its people.
4.This room is covered with dust,as if nobody has been living here for a long time.
5.Don't take commercial advertisement for granted.
6.Home environment has big effect on children's growing.
7.It is a custom to play a trick on somebody on april fool's day.
8.He has had three cakes,now he's on his fourth.
9.I'm upset after hearing about your sickness.Are you feeling better?
10.According to the time table,the train to London leaves at 10:22.