Believe it or not, no bread eaten by us is as sweet as _______ earned by our own labor.
A one B. that C. such D. what
The Voice of China has set up a stage some people can achieve their dreams．
| A．which | B．where | C．that | D．when |
---I will have to think about it again．
--- If you _, you may lose the opportunity to compete altogether．
| A．hesitate | B．wonder | C．continue | D．fail |
Exploring ________space is exciting, yet dangerous. There is ________need for both robots and humans for space exploration.
| A．the; a | B．a; a | C．/; a | D．/; the |
My mother has always_______we eat every healthily.
| A．make sure | B．made sure | C．be sure | D．sure |
One of the advantages of living on the top floor of a highrise is that you can get agood _______.
| A．sight | B．scene | C．look | D．view |