III)

1 . went/went

2 . told/visited

3 . has been started

4 . went/called

5 . rang/was having

6 . agreed

7 . were you doing

8 . happened

9 .  taught/left

10  . won

IV)
1 . stops

2 . will/answers

3 . catch

4 . won't come/are

5 . will help/finishes

6 . is

7 . will come/see

8 . will go

9 . will wait/come

10 . will send/arrive

V)
1 . bigger

2 . thicker

3 . oldest

4 . longest

5 . taller/the tallest

III . Past simple tense ( quá khứ đơn ) 

1. went - went 

2. told - visited 

3. started 

4. went - called

5. rang - had

6. agreed 

7. what did you do 

8. happened

9.  taught - left

10. won

IV . Give the right forms of the verbs in brackets: Simple future or Simple present.

1.  stops

2.  will stay - answers

3. catch

4. won't come - are

5 . will help- finishes

6 . is

7 . will come- see

8 . will go

9 . will wait- come

10 . will send- arrive

V. BÀI TẬP SO SÁNH TÍNH TỪ
1 . bigger

2 . thicker

3 . oldest

4 . longest

5 . taller- the tallest