— Mum, my friends are waiting for me outside. May I go out to play with them?— Yes, you , but be careful, please.
The city library ________ eight hours a day. It ___________ at 9 p.m..
Little Sammie is ________ fat, because he eats ________ food.
There is _______ “U” and _____ “S” in the word “useful”.
---What’s in the fridge? ---A few ___________, but little _________。
--- How often does Daniel exercise? --- ___________.