people will visit Qinzhou during the 12th Games of Guangxi.
| A．Thousand | B．Two thousands |
| C．Thousands of | D．Thousand of |
______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 |
The ________ of the island was quite an event in the world.
| A．discover | B．discovery | C．discovered | D．discoveries |