______of the earth ______ covered by water.
A. Two thirds; is B. Two thirds; are C. One thirds; is
We have different pies, _________ apple pies, cherry pies and strawberry pies.
| A．as for | B．instead of |
| C．for example | D．such as |
— Nanjing will be sunny tomorrow. Its temperature will stay between fourteen and twenty. —_________ weather it is! We can go hiking to Niushou Hill.
| A．What good | B．How good |
| C．How bad | D．What bad |
If everyone makes a ___________ to protecting the environment, the world will become much more beautiful.
| A．communication | B．Competition |
| C．contribution | D．Conversation |
Keep quiet, please! You must know talking loudly________ in the reading room.
| A．is not allowed | B．is allowed |
| C．doesn’t allow | D．Allows |
These new types of energy from the sun, wind and water cost very little and will never ________.
| A．run out | B．wash out |
| C．wear out | D．put out |