That's for a long distance call you make two nights ago.
这是你两天前打的一个长途电话的费用。
Can you guess what I was doing this morning?
你能猜到今天上午我在做什么吗?
I want to ask you for your advice. When I leave school, I want to be an engineer. For years I have been interested in engineering. I have made tools at home and have written articles for magazines. My father says that engineering is not a suitable subject