习 * * 提出的打铁还需自身硬讲的是官员自身素质的极端重要性。
参考答案：对
He looked around and caught a man ______ his hand into the pocket of a passenger.
A．put
B．to be putting
C．to put
D．putting
书籍；纸张
A．毛笔：宣纸
B．文具：文具盒
C．菜肴：萝卜
D．飞机：大炮
