III
1 A won't => wouldn't
Câu đk loại 2 ;If + S + V2/ Ved, S +would/ Could/ Should…+ V
2 D will be pleased=> would be pleased
Câu đk loại 2 ;If + S + V2/ Ved, S +would/ Could/ Should…+ V
3 A will be => are
Câu đk loại 1 If + S + V(s,es), S + Will/Can/shall…… + V
4 A would have => had
Câu đk loại 2 ;If + S + V2/ Ved, S +would/ Could/ Should…+ V
5 A won't => don't
Câu đk loại 1 If + S + V(s,es), S + Will/Can/shall…… + V
 

IV
1 She loves him, so she forgives him easily
=> if she didn't live him, she wouldn't forgive him easily
(Câu đk loại 2 ;If + S + V2/ Ved, S +would/ Could/ Should…+ V)
2 It rains , so the children don't go swimming
=> If it didn't rain, the children would go swimming
( (Câu đk loại 2 ;If + S + V2/ Ved, S +would/ Could/ Should…+ V)
3 They don'tbehave themselves, so their parents are not happy about that
=> If they behaved themselves, so their parents would be about that
((Câu đk loại 2 ;If + S + V2/ Ved, S +would/ Could/ Should…+ V))
4 if yoy didn't speak quickly,i could understand you
Unless you spoke quickly, i could understand you
( cấu trúc unless với câu đk loại 2:

• Unless + S +Ved / V2 (simple past), S+ would + V)

​5 If you don't have money, i can lend you some
=> Unless you have money, i can lend you some
( cấu trúc unless câu đk loại 1:

• Unless + S + V (simple present), S + will/can/shall + V)

​6 Hurry up or we will miss the bus
=> Unless we hurry up, we will miss the bus

12.D
13.B
14.B
15.A
16.A
17.C
18.A
19.C
20.B
III
1.A
2.D
3.A
4.A
5.A
Nhớ tick nhé

IV
1.If she didn't live him,she wouldn't forgives him easily.
2.If it didn't rain, so the children would go swimming.
3.If they behaved themselves,so their parents would be about that.
4.Unless you spoke quickly,I could understand you.
5.Unless you have money,I can lend you some.
6.Unless we hury up,we will miss the bus.
Nhớ tick nha