－Can you tell me _______ to travel to Dalian?
－About two hours by plane.
| A．how much it costs | B．what I should take |
| C．how long it takes | D．which is the best season |
I haven’t heard ________ Jim yet for a long time.
| A．of | B．from | C．about | D．with |
______I got up early this morning, I couldn't catch the early bus.
| A．When | B．Although | C．Because | D．If |
The environment in our city ____ greatly if we make every effort in the near future.
| A．improved | B．was improved |
| C．has improved | D．will be improved |
________ the girls in our class ________ over twenty.
| A．A number of, are | B．The number of, are |
| C．A number of, is | D．The number of, is |
We planted _______ trees last year.
| A．hundreds of | B．hundred of | C．five hundred of | D．five hundreds of |