_______ is even important is ______ as the earth cooled down, water began to appear on its surface.
| A．That, that | B．What, that | C．What, what | D．It, that |
I can __________ the house being untidy, but I hate it if it's not clean.
| A．come up with | B．put up with |
| C．turn to | D．stick to |
Put __________ use in April 2000，the hotline was meant for residence reporting water and heating supply breakdowns.
| A．into | B．in |
| C．at | D．on |
I always dream of __________ to travel to different places, meeting different people.
| A．being a chance | B．there chance |
| C．there to be a chance | D．there being a chance |
Come and __________ your wet coat, or you will catch a cold.
| A．put on | B．remove |
| C．pick up | D．put away |
The __________ of the Itaipu Dam took 30，000 people seven years.
| A．construction | B．structure |
| C．destruction | D．instruction |