单项选择题
Little（）that he would fulfil his task so rapidly.
A．did we expected B．did we expect C．we expected D．we expect
单项选择题 The students are（）young people between ages of 16 and 20.
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（）
