---Who’s the man over there? Is it Mr. Black?--- It _________ be him. He’s much taller.
useful invention(发明) the computer is!
When you are trouble, why not phone the ?
You go to see a doctor in a hospital. When he asks you, “What’s your trouble?” You should say “ . ”
–Do you like staying at home ?--No, I don’t. That always makes me feel .
I met Li Lei hospital last Sunday. He was ill hospital then.