Look at those boots . How much ____they ?
A.is B.am C.are
你想问问你的祖母身体好吗，可以说：
A. How are you, Grandma ?
B. Good morning.
你想买四块饼干，应该说：
A. Four biscuits, please.
B.Count the biscuits, please.
如果你想知道这是不是办公室，你可以说：
A. This is the office.
B. Is this the office?
你想知道这是什么，你应该问：
A. What is that ?
B. What is this?
你想知道树上有多少只小鸟，你可以说：
A. How many birds ?
B. They’re birds.