1 They will lose their way if they(not have)........ a map
2 If students do not throw plastic bags anvmore our school yard( clean).....
3 If Lan(not have)...... a bicycle, she will not go camping with us
4 If the students(attend)..... Quang Trung school, they will have to wear uniform
II
1 Shall we use gas instead of burning coal?
-> I suggest................................................
2 Tom failed the exam because of his laziness
-> Because Tom.........................................
3 She planted that tree five years ago.
-> That tree...............................................
4 People have used the Internet all over the world
-> The internet