Why does take Tom an hour to get home?— I don’t know. Maybe the traffic is heavy.

They walked around the city to ____________ money for the children in disaster-hit areas after the terrible earthquake in Mexico.

Education reform，the Chinese government attaches great importance，has attracted a lot of public attention．

_____ students are there in your class, Mr. Li? — Fifty. [ ]

Mike，is this Tom’s pencil?—Oh，yes，it is ！