____people _____were killed or injured reached more than 400,000
| A．The number of ,who | B．A great number of, who |
| C．The number of, which | D．A great number of, whom |
— _________ was it _________ they discovered the entrance to the underground palace？
— Totally by chance.
| A．What; that | B．How; that | C．When; how | D．Where; that |
Mr. Wang made up his mind to devote all he could _____ his oral English before going abroad.
| A．improve | B．to improve | C．improving | D．to improving |
Try the new cleaner. Just a few minutes every day－that’s all it takes－_________ you could have shining floors and furniture.
| A．but | B．and | C．or | D．so |
Recently some studies have found that learning ___________ second language can lead to __________ increase in one’s brain power.
| A．a; the | B．不填; the | C．a; an | D．the; an |
---Are you being_____, sir?
---No, I just want to buy a cellphone.
| A．looked after | B．attended to | C．led in | D．admitted in |