—I had a good holiday at my uncle’s.
—________ .
| A．Oh, that’s very nice of you | B．Congratulations |
| C．Oh, I’m glad to hear that | D．It’s a pleasure |
Jerry has promised to keep the secret, so he won't tell anyone ________ asked to.
| A．until | B．now that |
| C．unless | D．even though |
The movie Life of Pi is so attractive that it holds the audience's curiosity ________ the story reaches the end.
| A．until | B．before |
| C．after | D．when |
________ H7N9 is a deadly virus, it is still safe to eat thoroughlycooked chicken.
| A．Until | B．While |
| C．If | D．Since |
I will accept Guy coming with us, ________ he pays for his own meals.
| A．only if | B．so that |
| C．ever since | D．even though |
Scientists are warning that ________ emissions of carbon (碳排放) are cut, we could be heading for an environmental disaster.
| A．before | B．as |
| C．unless | D．in case |