1, we should use cloth bags instead of plastic bags -->
2, we can use the gar bage to make fertilizer -->
3, some body clean the house every day -->
4, how do people learn language ? -->
5, Mr. Robinson teaches us how to speak english properly -->
6, Your teacher must sign this form -->
7, people play football all over the world -->
8, Our form teacher will hold a class discussion next monday -->
9, I will repair your bicycle tomorrow afternoon -->
10, penicillin can cure many dangerous diseases -->