itiscommontoseepeopl的精选

问题详情：Nowadays，itiscommontoseepeoplestaringattheirmobilephonesinsteadofreadingareal   book＿＿＿＿＿＿manyexpertsareworried．   A.whenB．forwhichC．whereD.aboutwhich【回答】D知识点：定语从句题型：选择题...