Đáp án Bài 3:

1.lots

2.there

3.river

4.south

5.longest

6.than

7.to

8.highest

9.height

 10.has

Giải thích các bước giải:

Viet Nam is in the South- East Asia. It has (1)lots of beautiful mountains, rivers and beaches. (2)There are two long (3)river in Viet Nam: the Red River in the north and the Mekong River in the (4)south. The Mekong River is the (5)longest river in the South- East Asia and of course it is longer (6)than the Red River. The Mekong River starts in Tibet and flows (7)to the sea. Phanxipang is the (8)highest mountain in Viet Nam. It’s 3,143 meters (9) height. Viet Nam also (10)has a lot of nice beaches such as Sam Son, Do Son, Nha Trang, Vung Tau. 

Bài 5:

1.The weather

2.staying

3.Mr.Kien

4.are

5.washing

6.have

7.with

8.they

9.evening

10.finish

Bài 8:

1.a

2.strong

3.does

4.in

5.his

6.by

7.leaves

8.has

9.on

10.breakfast