35. It was announced that only when the fire was under control ______ to return to their homes.

A. the residents would be permitted　　　　　　 　B. had the residents been permitted

C. would the residents be permitted　　　　　 　　D. the residents had been permitted

34. Occasions are quite rare ______ I have the time to spend a day with my kids.

　 A. who　　 　　B. which　 　　　C. why　 　　　　D. when

33. Thank you for all your hard work last week. I don’t think we _____ it without you.

　 A. can manage　 B. could have managed　 C. could manage　 　D. can have managed

32. _____ was most important to her, she told me, was her family.

　 A. It　　 　　　　　　B. This　 　　　　　　C. What　 　　　　D. As

31. He found it increasingly difficult to read, ______ his eyesight was beginning to fail.

　 A. though　 　　　　B. for　 　　　　　　　C. but　 　　　　　D. so

30. _______ all the required papers, he didn’t answer the questions fluently in class.

A. Having not read　 　B. Not having read　　 C. Not read　　　 　D. Not to read

29. Obama, the first black president in American history, ________ presidency on January 20th, 2009.

　 A. set up　　　　　 B. held up　　　　　　 C. took up　　　　　 D. picked up

28. With the effects of global warming, trees 　　　　　their leaves much later in the year.

A. are losing　　　 B. have lost　　　　　 C. lost　　　　　　　 D. were losing