Do you know how long the dinosaurs _____ on the earth before their extinction?
| A．had existed | B．had been existed |
| C．have existed | D．have been existed |
I suggested he work out a new plan but he didn’t ________it.
| A．respond to | B．respond |
| C．make response | D．in response to |
If you take________risk of not wearing a seat belt，you will be at________risk.
| A．the；/ | B．/；/ |
| C．/；the | D．the；the |
________around the fire，the tourists danced with the local people.
| A．Gather | B．To gather |
| C．Gathering | D．To be gathering |
I have________the habit of rising early and going to bed late.
| A．got to | B．got into |
| C．fell to | D．put into |
Our teacher advised you to ________the article that is too long so as to make it fit the space.
| A．cut away | B．cut through |
| C．cut up | D．cut down |