---I can’t find Mr. Smith .Where did you meet him this morning ?
---It was in the hotel ______he stayed .
| A．that | B．which | C．the one | D．where |
The hall began to fill up with people __________.
| A．by and by | B．sooner or later |
| C．little by little | D．all in all |
_________ is known to all that he can't answer the question __________ he found the money.
| A．As; how | B．That; why |
| C．What; where | D．It; when |
I would gladly pay __________ for the book, because it is quite a use- ful one.
| A．twice as much | B．twice so much |
| C．as much twice | D．so much twice |
__________ with the size of the whole earth, the highest mountain does not seem high at all.
| A．When compared | B．Compare |
| C．While comparing | D．Comparing |
The number of people who __________ killed in the earthquake __________ reached 30，000.
| A．was; has | B．were; has |
| C．were; have | D．was; have |