It's the second time that I __________ in Beijing. What great changes! It's years since I __________ here last time.
| A．went; had left | B．have been; left |
| C．had been; left | D．have been; had left |
Science and technology are advancing so quickly that________ is a possibility today may be a reality tomorrow．
| A．that | B．which | C．不填 | D．what |
Each person has his / her unique character which ________him / her from others．
| A．differs | B．distinguishes | C．divides | D．draws |
That is the only way we can imagine________ the overuse of water in students’ bathrooms.
| A．reducing | B．to reduce | C．reduced | D．reduce |
．—You didn’t take the high-speed train with the leading letter "G" to Shanghai?
—________. I still took the "D" train, which saved me more than 50 yuan．
| A．Yes, I didn’t | B．No, I did | C．Yes, I did | D．No, I didn’t |
After the Yushu earthquake, to make sure that rescue work could be carried out as smoothly as possible, Premier Wen Jiabao________ his visit to Brunei.
| A．put away | B．put off | C．put up | D．put down |