A number of high buildings have arisen ______ there was nothing a year ago but ruins.
| A．where | B．when | C．before | D．until |
______ by many well-known experts and film stars, the product was very popular at one time.
| A．To advocate | B．Having advocated | C．Advocating | D．Advocated |
We had intended to do everything according to the schedule, but it didn’t ______ as planned.
| A．make up | B．turn out | C．go on | D．come up |
Some people are sitting on the grass; others are walking along the lake, ______ .
| A．chatting and to laugh | B．to chat and to laugh |
| C．chatting and laughing | D．chatted and laughed |
Over years, scientists have made a great _____in the treatment of cancer.
| A．break-in | B．breakthrough | C．breakup | D．breakdown |
Many children think they are ______ with when their parents are trying to show concern about them.
| A．interfered | B．separated | C．disturbed | D．offended |