It was when she was about to go to bed ______ the telephone rang.
| A．since | B．as | C．that | D．then |
33．The highway through the rain forest was completed in 1990, _________some animal species have died off.
| A．by when | B．since then | C．since when | D．by which time |
32．With so many trees and flowers_____about, our school campus looks like a beautiful garden.
| A．planted | B．to be planted | C．planting | D．being planted |
31．_________reasonable, the idea he to create a friendly environment attracted much public attention.
| A．Sounded; came about | B．Sounded; came across |
| C．Sounding; came up with | D．Sounding; came along |
30．We think that it’s love, generosity and perseverance______make the worldit is today.
| A．what; that | B．that; what | C．which; what | D．which; that |
29．In no case_________gothe law of nature or we’ll meet endless suffering.
| A．we can; by | B．can we; for | C．we can; round | D．can we, against |