—Excuse me, where are we going to have our class meeting?—I’m not sure. Ask Li Hua, please. He _________ know.
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? --- ___________.
Doctors say we need more fruit and vegetables to be ________ because _______ is very important.