As volunteers, we help elderly people and war invalids in our neighborhood with their chores. A. young B. sick C. poor D. oldĐoạn vănGiải thích11/50 II. VOCABULARY, STRUCTURE AND GRAMMAR Exercise 1. Choose the letter A, B, C or D to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following sentences. As volunteers, we help elderly people and war invalids in our neighborhood with their chores.young sick poor old