Tom is good at maths, so I think he is the student ______can help you to work out this problem.
He began to take political science only when he left school.
—Come on,please give me some ideas about the project.—Sorry. With so much work my mind,I almost break down.
If you leave the club, you will not be back in.
—Ken, , but your TV is going too loud. —Oh, I'm sorry. I'll turn it down right now.
She says that she’ll have to close the shop ________ business improves.