1 I like to do physics experiments

He said that ................he likes to do physics experiments..........................

2 You have to keep quiet if you want to stay here

She told me that ................I have to keep quiet if I want to stay there.........................

3 I will hand in my assignment to the teacher tomorrow

She said ..........she would hand in her assignment to the teacher tomorrow....................

4 The film will begin at seven o'clock

They announced that.............. the film would begin at seven o'clock.............................