1, You will never know what is going to happen when they get together.
2, You can avoid some disease by keeping yourself clean.
3, I have never travelled by air.
4, The students need to study for exam now.
5, It was such a cold day that we decided not to go out.
6, The college invited her to speak in the graduation ceremony.
7, Many of us love computer games, but we spend should less time playing them.
8, Sleeping in weekend helps you recover after a busy week.
9, I advise you to put your money to the bank.
10, He never forgets to wait his friend to go to school.
