I look forward to my fifth trip to this land _______ I will pay a state visit to Australia and attend the ninth G20 summit, in Brisbane.
| A．during which | B．on which |
| C．at which | D．which |
If he __________, he would have passed the examination.
| A．had worked hard | B．worked hard |
| C．has worked hard | D．works hard |
When we travel in other countries, we have to ________ lots of different customs.
| A．used to | B．get used | C．got used to | D．get used to |
Great changes ___ in the past ten years in China.
| A．took place | B．have taken place |
| C．were taking place | D．had taken place |
Many accidents _________ by careless drivers last year .
| A．are caused | B．were caused |
| C．have caused | D．will cause |
The book ___ to me is very interesting.
| A．you lent it | B．you lent |
| C．that you lent it | D．which you lent it |