--- The young man spent as much time as he _______ the experiments.
--- No wonder he succeeded _______.
| A．did; by the end | B．could doing; in the end |
| C．could doing; at the end | D．could to do; in the end |
The plane must be ready within half an hour. There should be no in sending the blood and medicine to the injured people.
A．hurry B．delay C．time D．wait
The manner in which a telephone is answered gives the image of the organization, so
polite and pleasant when answering the telephone.
| A．being | B．be | C．to be | D．having been |
With the country’s population increasing to 1.3 billion, many of China’s rivers, including the legendary Yellow River, .
| A．is drying up | B．will be drying up | C．h ad dried up |
D．are drying up |
I’m into the video game, it’s hard to think of anything else. All my focus is on finishing 
the story line.
| A．Unless | B．Once | C．Whether | D．Although |
We live in a world that is changing fast, one changes come at what seems to be an ever-increasing pace.
| A．Unless | B．Once | C．Whether | D．Although |