The fast popularity of cloud computing means netizens will need to take added measures to make sure their data stay __________in the digital age.
| A．accurate | B．stable | C．unknown | D．secure |
At the sight of the policeman, ____ from behind the door.
| A．did the boy rush out | B．the boy was rushing out |
| C．out rushed the boy | D．rushing out was the boy |
Only when ___ possible to settle the problem.
| A．does the chief editor come will it be | B．the chief editor comes will it be |
| C．has the chief editor come will it be | D．the chief editor comes it will be |
___ different life today is from ___ was 50 years ago!
| A．What a; what | B．How; what | C．What; what | D．What a; how |
The Japanese guests suggested ____ their country.
| A．our visiting | B．to us a visit to | C．we pay a visit to | D．all the above |
What idea can a man who is blind from birth have ____ color?
| A．in | B．of | C．with | D．for |