1. If it doesn't stop raining, we won't go out.

2. You didn't cook as well as her.

3. We can only get into the house if someone has a key.

4. If we had had enough money, we would have gone on holiday.

5. My father allowed me to use his car.

6. Researchers on AIDS began to be carried out by scientists in 1980. 

1. Hoa does not like taking photos.

2. It is too easy to get flu.

3. Can you tell me how to cook the rice, please?

4. The Temple of Literature was built in 1070.

5. Hoa didn't go to school because she was ill.

1. Neither he nor his wife wanted to watch TV.

2. In spite of being ill, he went to school.

3. Before answer my question, think carefully.

4. My mother cooks better than me.

5. Because she was careful, she didn't make any mistakes in her answer.

6. She said that she had spent her holiday in Italy the year before.