__________ the heavy fog, our flight was held up eventually.
| A．Thanks to | B．According to | C．Because of | D．In spite of |
Nobody knows for sure how dinosaurs died out 65,000,000 years ago. It _______ because of sudden changes of their living conditions.
| A．must have happened | B．would have happened |
| C．should have happened | D．might have happened |
The British Museum, I think, is ________________ during the summer break.
| A．worth being visited | B．worthy of being visited |
| C．worthwhile to visit | D．worth while visting |
---- What terrible weather! I simply can’t get the car __________.
---- Why not try ________ the engine with some hot water?
| A．start, filling | B．starting, filling | C．started, to fill | D．to start, fill |
Ladies and gentlemen, now I will _______ the story where I left off the day before yesterday.
| A．keep up | B．take up | C．keep on | D．go on |