There are two spare rooms upstairs, ________ measures five meters across.
| A．the larger of them | B．the larger of that |
| C．the larger of which | D．the larger of whom |
We should follow the __________ in a foreign country we are visiting.
| A．habits |
| B．customs |
| C．tradition |
| D．practice |
__________ our earth, or else it will be no longer fit for us to live on.
| A．Protecting |
| B．To protect |
| C．Protect |
| D．Protected |
Don't __________ a trick on the little girl. She is very shy.
| A．take |
| B．have |
| C．give |
| D．play |
__________ your attention focused on practicing, and you can reach your goal of becoming an excellent pianist.
| A．Keep |
| B．Keeping |
| C．To keep |
| D．If you keep |
Anyone who wants to go raf-ting this weekend, raise your hands please，__________？
| A．doesn't he |
| B．don't they |
| C．do you |
| D．will you |