2、We can never expect    bluer sky unless we create     less polluted world.学科网学科网

     A. a; a                                    B. a; the学科网学科网

     C. the; a                                 D. the; the学科网学科网

1、We can never expect    bluer sky unless we create     less polluted world.学科网学科网

     A. a; a                                    B. a; the学科网学科网

     C. the; a                                 D. the; the学科网学科网

28、She’ll never forget her stay there ________ she found her son who had gone missing two years before. ks5u

A. that     B. which   C. where       D. when ks5u

27、She’ll never forget her stay there ________ she found her son who had gone missing two years before. ks5u

A. that     B. which   C. where       D. when ks5u

26、My uncle’s house in the downtown area is much smaller than ours , but it is twice _______ expensive . ks5u

A. as        B. so     C. too       D. very ks5u

25、

―You speak very good French! ks5u

―Thanks. I __________ French in Sichuan University for four years. ks5u

A. studied    B. study   C. was studying      D. had studied ks5u

24、The teacher together with the students ________ discussing Reading Skills that ________ newly published in America. ks5u

A. are; were      B. is; were    C. are; was        D. is; was ks5u

23、 Being a parent is not always easy, and being the parent of a child with special needs often carries with ___ extra stress.   ks5u

A. it   B. them    C. one    D. him   ks5u

22、____ twice, the postman refused to deliver our letters unless we changed our dog.   ks5u

A. Being bitten     B. Bitten   ks5u

C. Having bitten    D. To be bitten   ks5u

21、The biggest whale is ___ blue whale, which grows to be about 29 meters long―the height of ___ 9-story building.   ks5u

A. the; the      B. a; a      C. a; the     D. the; a