5. Rewrite Dave's phone conversation with Julia in direct speech in your notebooks. David said that he was going to see The Great Gatsby at the cinema. Julia asked him if he had read the book. Dave said that he hadn't. Julia said that it was really good and she told Dave that she would lend it to him. Dave said that it was very kind of Julia

0 Conditionals :
If you heat water, it boils, If your drop a book, it falls, if you take drugs , don't drive, water and oil don't mix when combime them , Molly uses glasses when she types
1 Conditionals :
If it rains, I will not go to the park, If I get this job, I will earn a lot of money, If I go to London, I will see the Tower of London, If you don't hurry, we will miss the train, If you see Greg ask him to ring me up
2 Conditionals :
If I had a lot of money , I would travel round the world, If I lived near the sea, I would sunbath every day , If we had a million, we would help the poor, If he knew English, he would find a job
3 Conditionals
If I had gone to Egypt, I could have learnt Arabic , If he had left earlier, we would have caught a train, If he had studied better, he would have got a job, If I hadn't been so busy, I could have helped you, If she had come on Saturday, I would have seen her

Смотря какое в предложение вс слово.Если глагол в времени,например, spoke,broke,ate ,тогда в "хвостике" берем 
didn't.Если в настоящем,например You speak French мы возьмем don't во второй части предложения.Если are-aren't,aren't-are;can-can't,can't-can.
Есть еще does-doesn't,мы берем его когда глагол стоит с частичкой s-works,lives,lies.

Есть одно исключение-когда в главном приложении стоит am,то в хвостике мы берем aren't.В случае если вторая часть положительная,мы берем am:
I am late, aren’t I?
I am not busy, am  I?