Unfortunately, the computer system ________ suddenly while they were searching for some information on the Internet.
| A．broke up | B．broke down |
| C．broke away | D．broke out |
.He went to the States in 1910,by _________ time he had learnt to dance and act in comedies.
| A．that | B．the | C．which | D．whose |
She never laughed,_________ lose her temper.
| A．or she ever did | B．nor did she ever |
| C．or did she ever | D．nor she ever did |
._________,the building gave us a deep impression.
| A．Designing beautifully | B．Beautifully designed |
| C．Design beautifully | D．Beautifully designing |
.Nowhere else in the world _________ more friendly people than in China.
| A．you will find |
| B．can you be able to find |
| C．you may have found |
| D．can you find |
.We waited and waited._________ we had been looking forward to.
| A．Then came the hour |
| B．Then did the hour come |
| C．The hour came |
| D．The hour then came |