27.  It’s dangerous ………..in this river. A  to swim              B  swim                      C  swimming             D  swam 28. Car tires…………..to make pipes and floor coverings. A. are recycling        B.   are recycled        C. recycled                D. recycling 29. I’m ………..that you passed your English exam.             A. delight                   B. to delight               C. delighting              D. delighted 30. It’s difficult……………English songs.             A. to sing                   B. singing                   C. sing                        D. sang 31. She asked me if I …………pop music.             A. like                        B. to like                    C. will like                 D. liked 32. When the mail man came, my family……………….. a.is sleeping          b. sleep                  c. was sleeping     d. slept 33. It is difficult………….used things.       a. recycle                         b. recycling               c. recycled                 D. to recycle 34. My friends visited while I……………a book       a. read                  b. was reading                       c. reads                       d. to read 35. The bike………………in Japan is very expensive.       a. make                . c.made                                 c. makes                       d. making 36.         She arrived early………….order to get a good seat .   A.on                    B.in                    C.out                     D.at 37. Would you ……………cleaning the floor for me ? A.like                  B.pleased           C.mind                  D.rather