★ 2020년 11월 고1 모의고사 어법/어휘 선택, 빈칸 연습 (21-24번 / 29-38번 지문) 21. With the Internet, everything changed. Product problems, overpromises, the lack of customer support, differential pricing — all of _______ issues that customers actually [experienced them / experienced] from a marketing organization suddenly [popped out / popping out] of the box. No longer [was / were] there any controlled communicatio..