=>
I/
1. I wish I hadn't spent too much money on clothes.
-> câu ước ở quá khứ wish S had (not) V3/ed
2. Football is said to be the best game to play.
-> Chủ động: People say S is/am/are...
-> Bị động: S is/am/are said to be....
3. Tom thanked you/me for helping him.
-> thank sb for Ving: cảm ơn ai vì
4. It's a three-hour drive from Hai Phong to Ha Noi.
-> three-hour drive ~ cuộc đi xe ba giờ
5. Never before has John been so rude to anybody.
-> đảo ngữ never before has/have S V3/ed
II/
1. I am afraid that the air pollution in our city is getting worse and worse.
-> air pollution: ô nhiễm không khí
2. We can use the Internet as an effective way for self-study.
-> can V: có thể làm gì
3. We shouldn't swim in this river because its water is highly polluted.
-> shouldn't V: không nên làm gì
4. In the city there was so much traffic and noise and there was no time to relax.
-> there was ~ had
5. I will miss the train unless I leave now.
-> unless ~ if not