1. You didn’t tell us the reason. We have to cut down our daily expenses for that reason.
   => You didn’t tell us the reason why we have to cut down our daily expenses.

2. The day was rainy. She left on that day.
   => The day when she left was rainy.

3. I’ve sent him two letters. He has received neither of them.
   => I’ve sent him two letters, neither of which he has received.

4. That man is an artist. I don’t remember the man’s name.
   => That man, whose name I don’t remember, is an artist.

5. One of the elephants had only one tusk. We saw these elephants at the zoo.
   => One of the elephants, which we saw at the zoo, had only one tusk.

1. I was the only one who realized him.
   => I was the only one realizing him.

2. I have some homework which I must do tonight.
   => I have some homework to do tonight.

3. Our solar system is in a galaxy that is called the Milky Way.
   => Our solar system is in a galaxy called the Milky Way.

Exercise 7:

1. You didn’t tell us the reason for which we have to cut down our daily expenses.
2. The day on which she left was rainy.
3. I’ve sent him two letters, neither of which he has received.
4. That man whose name I don’t remember is an artist.
5. We saw the elephants, one of which had only one tusk, at the zoo.

Exercise 8:

1. I was the only one realizing him.
2. I have some homework to do tonight.
3. Our solar system is in a galaxy called the Milky Way.