1, c – they can fly
2, a – the North and South Poles
3, b – to make it difficult to be seen because of the skin
4, d – sleep during the day and hunt at night
5, b – spreading the seeds
E, Writing
1, If they use so much pesticide, the rivers will be polluted.
2, I suggest decorating the living room for Tet.
3, Because of her good behaviors, everybody loves her.
4, Since she had a lot of difficulties, she managed to sell the house.
5, Nga is a good English speaker.
6, I was disappointed that you didn’t phone me.
7, The weather was so bad that we had to postpone our trip.
8, Because it rained heavily, they stayed at home.
