Last summer, we_________by the lake and roasted marshmallows over the fire. A. have camped B. camped C. camp D. were campingĐoạn văn5/40Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions. Last summer, we_________by the lake and roasted marshmallows over the fire.have camped campedcampwere campingGiải thíchChọn đáp án B