Don’t believe in those ads that you can master a language in one month. Instead, it is a(n) _______process, which may last for years.
| A．rapid | B．instant | C．gradual | D．regular |
--- What did Zhai Zhigang do while he was doing “walking” ____?
--- He ____ our national flag to the world.
| A．in space; showed | B．in the space; showed |
| C．in space; brought | D．in the space; brought |
I ____ in the street when I met an old friend of mine the other day.
| A．walked | B．was walking | C．has walked | D．had walked |
I find painting and listening to music ____.
| A．relaxing | B．is relaxing | C．relaxed | D．are relaxed |
I need one more coin before my collection ____.
| A．had completed | B．completes |
| C．has been completed | D．is completed |
I will never forget the day ____ Shenzhou V was launched, ____ has a great effect on my life.
| A．when; which | B．that; which | C．which; that | D．when; that |