I won’t call you, ______ something unexpected haappens.
| A．because | B．While | C．unless | D．while |
The people who are more confident have more______ to be successful.
| A．education | B．chances | C．pride | D．excuse |
I don’t like doing the cleaning, because it is ________.
| A．interesting | B．fun | C．boring | D．relaxing |
The boy spent 10 dollars ________ the model plane.
| A．on | B．with | C．at | D．for |
America is a ________ country.
A.develop B.development C.developing D,developed
We should keep our classroom _______.
| A．clean | B．cleaning | C．to clean | D．cleans |