--- 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
By hiking, people can ______ nature and experience a kind of life.
A. close to B. close the C. get close to D. get close to the