III:
1.don't economise
2.has learnt
3.didn't meet
4.are speaking
5.are
6.has
IV:
1. Most Australian live less than 80 kilometres from beach.
2. Swim, sailling and surfing.
3. Australia also have some top tennis players.
4.Because it's popular. (theo ý kiến của mik thì mik nghĩ vậy thôi nha)
V:
1. The Nile river is the longest river in the world.
2. Ba is shorter than Nam.
3. Nam likes watchinh television very much.
CHÚC BẠN HỌC TỐT NHA ! Nói trước, đây là bài mik tự làm nhé! Ko copy của ai đâu.