Complete the sentences

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BÀI TẬP WORD FORM ( UNIT 6-7-8)
UNIT 6
EXER 1
1. In order to keep our environment ..pda..p.alluiad we shouldn't drop litter in
public places. (pollute)
2. Don't pump
into seas and rivers or it will pollute them. (sew)
3. Don't throw away ...sec . bottles, papers, and glass. Take them to
recycling centres. (use)
4. If we keep on
.... the air, more people will suffer from respiratory
diseases. (pollution)
5. The local authorities have received many letters of .....
industrial wastes from that factory. (complain)
about the
EXER 2
6. Ba was .......
ill right after eating those
mushrooms. (serious / poison)