There is a new problem involved in the popularity of private cars ___________ road
conditions need _____________.
| A．when; improving | B．which; to be improved | C．where; improving | D．that; to be improved |
难度: 简单查看答案及解析
What way are you thinking of ______rid of the air pollution in our capital city?
| A．being getting | B．getting | C．to get | D．being got |
难度: 简单查看答案及解析