---- I wonder how much you charge for your services．
---- The first two are free ____ the third costs $30．
| A．while | B．until | C．when | D．before |
---Mary was asked to do something important.
---It doesn’t matter. Let’s the work where it is left off.
| A．take up | B．take down | C．take in | D．take off |
―Which of the two poems do you like better?
―____ shorter one, of course. I think it’s really ____ most interesting one.
| A．The; a | B．A; the | C．The; the | D．A; a |
The government should develop system to predict when wildfires occur and
give warnings in time.
| A．previous | B．reliable | C．reasonable | D．responsible |
There are a lot of signs men are more likely to have heart attacks than women.
| A．indicate | B．to indicate | C．indicated | D．indicating |
They intended to have the school better equipped，the local government was
not able to get enough money to do so.
| A．unless | B．while | C．although | D．once |