—I didn’t pass the Maths exam last time. I’m so worried about it. — harder, you will make much progress (进步).
—What ______the number of the students in your school?—About four thousand and seven hundred. A number of them ______ from the countryside.
— Why don’t you buy a new car now?—________ I don’t have enough money.
I think you won’t pass the coming English exam ______ you work hard from now on.
---Can you think of any_______tips to protect yourselves against crime?---I have no idea.
Nobody has the right to laugh at others _________ he is right.