Answer:
3:
1. waited
2. didn't break
3. had
4. had gone
5. were
6. didn't throw
4:
1. I wish I didn't stay up late last night.
2. If only he would be more polite! Apart from that he is a good kid.
3. I wish you came with me to the rescue center yesterday.
4. If only people wouldn't waste so much water!
5. I wish we knew about the environmental day earlier.
Explanation:
Hope this helps
It's a relative pronoun which introduces a relative clause.
Answer:
3. Ran faster than the speed of sound
