Can you show me a case ____ the professor mentioned yesterday?
| A．when | B．where | C．that | D．what |
We can never expect ____ bluer sky unless we create _____ less polluted world.
| A．a; a | B．a; the | C．the; a | D．the; the |
The newly discovered star was named ___a Chinese astronomer ____ honor of his contributions to astronomy.
| A．for; in | B．after; for | C．as; in | D．after; in |
-----Good morning, Xueyuan Hotel．
-----Hello, I’d like to book a room for the nights of the 14th and 15th.
-----_______.
| A．No problem. | B．Just a minute, please. |
| C．What can I do for you? | D．What’s the matter? |
— How did you find the film Harry Potter and the Deathly Hallows?
— ________. I can’t think too highly of it.
| A．It makes no sense | B．It’s really amazing |
| C．It’s awful | D．It’s up to you |
Would it be ________ for you to pick me up at four o’clock and take me to the airport?
| A．confident | B．constant | C．delighted | D．convenient |