______ you have known everything about it, it is unnecessary for me to talk about it again.
| A．As soon as | B．Now that | C．Although | D．While |
We followed their suggestion that we________right now.
| A．would set out |
| B．set out |
| C．setting out |
| D．could set out |
It's surprising that your brother ________Russian so quickly—he hasn't lived there very long.
| A．picked up |
| B．looked up |
| C．put up |
| D．made up |
You'd better________ the instructions so that the children could understand them.
| A．decline |
| B．reduce |
| C．concentrate |
| D．simplify |
I'd like to take________of this opportunity to thank you for your help.
| A．advantage |
| B．case |
| C．use |
| D．care |
The head of the company promised to deal with matters of this sort________he returned to his office.
| A．until |
| B．while |
| C．by the time |
| D．the moment |