—The research on the new flu virus vaccine is challenging and demanding. Who do you think can do the job?
—_______ my students have a try?
| A．May | B．Must | C．Shall | D．Will |
This kind of new car _______ in three colors: black, silver and red.
| A．comes | B．sells | C．offers | D．produces |
--- How did you find your visit to Shangri-La?
---I thoroughly enjoyed it. It was _______ than I expected.
| A．far more fascinated | B．even much fascinating |
| C．by far more fascinating | D．so more fascinated |
--- Look at these black clouds. It _______ soon.
--- Sure. If only we _______ out.
| A．is raining; didn’t come | B．is to rain; won’t start |
| C．will rain; haven’t started | D．is going to rain; hadn’t come |
One can fail at times, but _______ makes a difference is one’s attitude towards life.
| A．what | B．which | C．that | D．where |
. He tried his best to solve the problem, _______ difficult it was.
| A．however | B．no matter | C．whatever | D．although |