________ him not to do so, he wouldn't have made such a serious mistake.
| A．If I persuaded | B．Did I persuade |
| C．Had I persuaded | D．If I should persuade |
These two houses are similar _____ they both have a large garden with many kinds of flowers.
| A．to that | B．in which | C．in that | D．to which |
—Would you like to come to dinner tonight？
—I’d like to, ___ I’m too busy.
| A．and... | B．so |
| C．as... | D．but |
—I don’t like chicken _______ fish.
—I don’t like chicken, _______ I like fish very much.
| A．and, and... | B．and, but |
| C．or, but... | D．or, and |
We were just about ready to leave _____ it started to snow.
| A．when | B．before |
| C．after | D．since |
_____ the government agrees to give extra money , the theatre will have to close.
| A．Until | B．Unless |
| C．Since | D．While |