Bài 3
1 recycle
2 clear
3 many
4 bottles
5 dishes
Bài 4
1 plastic
2 colours
3 glass
4 good
5 car
Bài 5
1 will drive
2 writes
3 will get angry
4 will go
5 doesn't pass
6 will learn
7 will go
8 doesn't cost
9 will catch
10 don't feel
Bài 6
1 If I can't sleep, I will get up and read book
2 If it is nice, I will go for a picnic on the river bank
3 If she works hard all the time, she will pass the exam
4 If she travels a lot, she will be very tired
5 If people pollute the air, our environment will have many problems
6 If we make an excess of noise in the outdoors, we will have noise pollution
7 If we use too many artificial chemicals, we will have soil pollution
8 If people use too much bright lighting in big cities, they will have light pollution
9 If Peter doesn't arrive on time, he will miss the train
10 If you don't finish your homework, you will get the bad marks
Bài 8
1 make
2 save
3 collect
4 put
5 turn off
6 give
7 write
8 put
9 save
10 keep