一、1. My sister is thirteen years old.

2.Look, that giraffe is the tallest one.

3.The science museum is great.

4.These two students washed their clothes last weekend.

5.We went to see a film last night.

6.We're going to visit my grandparents next weekend.

7.There are a lot of grapes in Xinjiang.

8.Turn right, then go straight. You can see the beach.

9.I always go to the park and fly kites there.

10. Let's have a race on the playground.