______ twice, the postman refused to deliver our letters unless we chained our dog.
| A．Being bitten | B．Bitten | C．Having bitten | D．To be bitten |
--How is your cousin, Kate?
--She broke her leg and ______ medical treatment since.
| A．is receiving | B．has received |
| C．received | D．has been receiving |
--Mom, may I play computer games just for a while?
--______! Dad is writing his paper.
| A．Help yourself |
| B．It's up to you |
| C．Go ahead |
| D．Behave yourself |
It took ______ building supplies to construct these energy saving houses. It took brains, too.
| A．other than | B．more than |
| C．rather than | D．less than |
Though it is 20 years ______ we last met, I still remember the scene______ we got separated on a snowy day.
| A．before; where | B．before; which |
| C．since; when | D．since; where |
She is very dear to us. We have been prepared to do ______it takes to save her life.
| A．whichever | B．however |
| C．whatever | D．whoever |