Many developing countries are unwilling to pursue their economic development __________ destroying the environment despite there being several financial crises.
| A．at the risk of | B．at the cost of |
| C．at the end of | D．at the mercy of |
---- Do you know our town at all?
-----No, this ________ the first time I _________ here.
| A．was; has come | B．is; come | C．is; had come | D．is; have come |
Last Sunday, they arrived at the farm _____ they had never paid a visit before.
| A．that | B．which | C．to which | D．for which |
When______ a new word, you’d better_______ a dictionary.
| A．come across, refer to | B．coming across, consult |
| C．coming across, look up | D．come across, consult |
_______ more attention, the cabbages ________ grown better.
| A．Given; could have | B．Giving; could be |
| C．Given; could be | D．Giving; could have |
It was announced that only when the fire was under control ____ to return to their homes.
| A．the residents would be permitted | B．had the residents been permitted |
| C．the residents had been permitted | D．would the residents be permitted |