I have a bike. The bike is red.

• The bike that I have is red.
• The bike which I have is red.

The tourist is kind. He helps me a lot.

• The tourist who helps me a lot is kind.

I bought a book yesterday. The book is very interesting.

• The book that I bought yesterday is very interesting.
• The book which I bought yesterday is very interesting.

The woman lives next door. She is a doctor.

• The woman who lives next door is a doctor.

We stayed at this hotel last summer. This is the hotel.

• This is the hotel where we stayed last summer.

The boy wants to be an astronaut. His father is a pilot.

• The boy whose father is a pilot wants to be an astronaut.

She showed me a letter. She had received the letter.

• She showed me the letter that she had received.
• She showed me the letter which she had received.

A car was parked in front of my house. It belongs to my uncle.

• The car that was parked in front of my house belongs to my uncle.
• The car which was parked in front of my house belongs to my uncle.

The students won the competition. They were very happy.

• The students who won the competition were very happy.

She left early. This is the reason.

He works at a company. The company is very famous.

• He works at a company that is very famous.
• He works at a company which is very famous.

A dog saved the little boy. That is the dog.

• That is the dog that saved the little boy.
• That is the dog which saved the little boy.

A teacher teaches us English. He is very friendly.

• The teacher who teaches us English is very friendly.

We used to play in the park. The park is now a shopping mall.

• The park where we used to play is now a shopping mall.

I saw a movie last night. The movie was very exciting.

• The movie that I saw last night was very exciting.
• The movie which I saw last night was very exciting.

The girl is singing on the stage. She is my sister.

• The girl who is singing on the stage is my sister.

He bought a laptop. The laptop is very expensive.

• The laptop that he bought is very expensive.
• The laptop which he bought is very expensive.

The man helped me fix my car. He is a mechanic.

• The man who helped me fix my car is a mechanic.

They visited a museum. The museum has many ancient artifacts.

• The museum that they visited has many ancient artifacts.
• The museum which they visited has many ancient artifacts.