— Mum, my friends are waiting for me outside. May I go out to play with them?— Yes, you , but be careful, please.
---Does Cindy go to school by _____ bus? ---No, she doesn’t. She takes ______ underground.
---____________? ---Yes, I want some strawberries and apples.
I want two kilos of eggs. Here ______ 20 yuan.
______on the Internet, you only need a computer and a mouse.
There is a big supermarket near the post office. We can buy ______ everything in it.