They/ often/ have/ lunch/ 12.15/.19/24They/ often/ have/ lunch/ 12.15/.They have often lunch at 12.15. They often have lunch at 12.15.They have lunch at 12.15 often. They have lunch at often 12.15.Giải thíchĐáp án đúng là: B S + từ chỉ tần suất + V(s/es) Dịch: Họ thường ăn trưa vào lúc 12h15