Dưới đây là phần hoàn thành cho câu hỏi của bạn:

1. People believe that 13 is an unlucky number.
**13 is considered an unlucky number.**

2. “How many cars are there in front of your house, Mai?”
I asked **Mai how many cars were in front of her house.**

3. No one introduced me to newcomers in the festival.
I **was not introduced to newcomers in the festival.**

4. The food was too bad for the children to eat.
The food was so **bad that the children couldn't eat it.**

5. It’s no use persuading her to join in that activity.
There is no **point in persuading her to join in that activity.**