giúp mình với ạ giải thích giúp mình luôn ạ Mark the letter A,B,C or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following sentences. Question 21: We started living in this small town in 1982. A. We have lived in this small town for 1982. B. We have lived in this small town since 1982. C. We have started living in this small town since 1982. D.We have lived in this small town in 1982. Question 22: She spent years working as an assistant in that film company. A. It took her years working as an assistant in that film company. B. It took her years work as an assistant in that film company. C. It took her years to working as an assistant in that film company. D. It took her years to work as an assistant in that film company. Question 23: The Vietnamese government has bought 20 million doses of Covid 19 vaccine. A. 20 million doses of Covid 19 vaccine have been bought by the Vietnamese government. B. 20 million doses of Covid 19 vaccine have to be bought by the Vietnamese government. C. 20 million doses of Covid 19 vaccine have being bought by the Vietnamese government. D. 20 million doses of Covid 19 vaccine have be bought by the Vietnamese government.