---Why is the woman crying there?---Because she is ______. Her only son is lost and no one can help find him now.
It wasproblem thatof the students could work it out.
The team will movea speed of 15 kilometers per hour, and have a short break every 2 hours. During the break they will tell stories_______ English.
—What a pleasant surprise to see you here! Iyou Shanghai. —Me too. But I there next Saturday.
It’s rather cold in most of south China _________ in spring.
—You are always full of_________ . Can you tell me the secret? —Taking enough exercise every day.