摘要: All the visitors have to pass security check before they are allowed to enter the stadium, ? A. don’t they B. haven’t they C. aren’t they D. are they
网址:http://m.1010jiajiao.com/timu3_id_3229249[举报]
网址:http://m.1010jiajiao.com/timu3_id_3229249[举报]