Choose the best answers to complete the sentences : 33. Playing games online has begun to have a serious ................ on students’ sleeping habits A. impact B. act C. attack D. affect 34. John gained access ...................... the computer after he had entered the password three times A. for B. with C. on D. to 35. The year .................. the first man travelled in space will never be forgotten A. which B. that C. when D. where 36. The advantage of the smaller tablets is its greater .......................... A. portability B. portable C. portably D. pocket 37. “ “ in the sentence below is not correct: One reason birds have been so successful is because of their able to escape from danger quickly A B C D 38. Bay to Breakers, , is a marathon race held annually in San Francisco. A. which the runners wear hilarious costumes B. its runners wear hilarious costumes C. the runners of which wear hilarious costumes D. which its runner wear hilarious costumes 39. I have sent him 2 letters , neither of .....................has arrived A. which B. who C. them D. that 40. The town ..................... we are living is noisy and crowded A. in where B. which C. at which D. where