单项选择题
The students are（）young people between ages of 16 and 20.
A．mostly B．almost C．most D．at most
单项选择题 He had（）returned to his office when he was told to see his boss again.
单项选择题 Clever and intelligent as he is, he can never solve the problem（）
问答题 He got up, walked across the room, and with a sharp quick movement flung the door widely open.
