There is one mistake in each sentence. Find and correct it

VI. There is one mistake in each sentence. Find and correct it.

1. I love Thai food now, but I didn’t used to like spicy food.

2. He can drive a bicycle with his hands off the handlebars.

3. We use to walk miles to school every day due to lack of public transport.

4. You are not allowed to drive faster than the number on a limit speed sign.

5. It about 1137 kilometres from Hanoi to Ho Chi Minh City.

6. Bicycles are a cheap and efficient mean of transport.

7. A sign within a red triangle will warn people for something.