Not once________to Michael that he could one day become a top student in his class.
| A．occurred it | B．it did occur |
| C．it occurred | D．did it occur |
When he entered the hall, he found the big desk ______with flowers and many people ______at him kindly.
| A．covering, staring | B．covered, stared |
| C．covered, staring | D．covering, stared |
Is this the reason _______she explained in the report for her success in the job?
| A．what | B．that | C．how | D．why |
The heavy fog in London made ______deep impression on us, which was sometimes so heavy that we lost _______sight of everything around us.
| A．a; the | B．a; 不填 |
| C．the; the | D．the;不填 |
Even within China, the beauty and mystery of Chinese food has never been properly explained or _____ appreciated on an artistic level.
| A．simply | B．causally | C．briefly | D．thoroughly |
Malaysian Prime Minister announced on Monday that the missing Malaysia Airlines MH370 ended in the Southern Indian Ocean, but many said it lacked _____ evidence.
| A．fierce | B．severe | C．solid | D．potential |