---_______ the farmers discovered the entrance to the secret cave in the valley?
--- Totally by chance.
| A．When was it | B．How was it |
| C．How was it that | D．When was it that |
The cave is _____to the public, high up the face of a cliff which no one can climb.
| A．inadequate | B．inconvenient |
| C．impossible | D．inaccessible |
—Excuse me! I’d like to book a table for four for the dinner tonight.
—Sorry, sir, but there is_____ available tonight. You many try ______ restaurant.
| A．nothing; the other | B．none; another |
| C．nothing; another | D．none; the other |
He __________ with business matters . Otherwise , he would have given you a hand .
| A．had been occupied | B．occupied |
| C．had occupied | D．was occupied |
Give it a minute __________ you’ll be able to see the result better .
| A．but | B．till | C．and | D．or |
---Hello, Jack. Tracy here. It’s about our ________ on Sunday morning. I’m afraid I can’t make it now.
----That’s OK, but you need to find another date.
| A．admission | B．application |
| C．agreement | D．appointment |