36. They want to return to America _________________________________________________________________ 37. Mrs. Robinson buys a poster. _________________________________________________________________ 38. My father is in Ha Noi _________________________________________________________________ 39. He travels to Nha Trang by coach. _________________________________________________________________ 40. She goes to the doctor because she is sick. _________________________________________________________________ 41. Nam leaves home at 7 o'clock _________________________________________________________________ 42. He teaches English at the high school. _________________________________________________________________ 43. The lesson is very difficult. _________________________________________________________________ 44. She often does the housework after doing exercises. _________________________________________________________________ 45. They are planting some roses in the garden. _________________________________________________________________ 46. Liz will send these letters to her friends. _________________________________________________________________ 47. My favorite subject is Math _________________________________________________________________ 48. I often listen to music in my free time. _________________________________________________________________ 49. He is good at drawing _________________________________________________________________ 50. She learns about computers in computer science class. _