It may not rain, but you had better take an umbrella__________.
| A．in case | B．as well | C．as least | D．in need |
The head of the company promised to deal with matters of this sort he returned to his office.
| A．until | B．while |
| C．at the time | D．the moment |
We can never expect bluer sky unless we create less polluted world.
| A．The; the | B．/; the |
| C．A; the | D．a; a |
—rapid progress they have made!
— Right. And it is true the students from other developing countries.
| A．What a; with | B．How a; for |
| C．How; of | D．What; of |
The plane is flying ____ a speed of 500 kilometers an hour ____ the way to Kunming.
| A．with; on | B．at; on |
| C．at; in | D．with; in |
You can’t learn to play the piano without practising．____, you can’t learn a language well without using it.
| A．Likely | B．Hopefully |
| C．Similarly | D．Personally |