Tiếng Anh Lớp 10: Mary has been working in this company for five years. →. Mary began 42. It’s three years since I last saw a Hollywood film. → The last time 43. I haven’t visited the museum for three months. →l last 44.Someone knocked on the doo during my lunch time. →While l 45.He marked the papers and then he gave them to his students → After he 46. Sue has been in Italy for the last three weeks. (went) →Sue 47.I met her during my stay in Paris last summer. (while) →l met 48. How long is it since they went to Nairobi? (When) →When 49. Mac Kenzie wrote four best-sellers before he was twenty. (By the age) →By the age 50. In the middle of our dinner there was a knock at the door. (when) →When we, giúp em giải bài này ạ, em cảm ơn thầy cô và các bạn nhiều.