It’s. I think it’s very easy.

There are many volunteers ______ are helping the children in Sichuan.— And most of them are college students.

“Take this medicine(吃药) and it will make you better soon,” the nurse says to the sick boy.

Of all your coats, why do you like this one best?—Because it’s _________ than the others.

You should take off your shoes before you ＿＿＿ the new flat.