----- Nội dung dịch tự động từ ảnh ----- Mark the letter A, B, C or D to indicate the correct preposition or adverb particle that completes the sentences. 5.In the past, we had to walk a lot, which kept us A. in good shape. B.on to D.at 6. They're going to bring A about B.at a guidebook to different beauty spots in Viet Nam C. for D.out