试题详情
单项选择 较易0.85 引用2 组卷108

Large groups that want to visit the museum have to get permission __________ they visit it.

A.unlessB.whereC.asD.before
23-24高一下·北京·开学考试
知识点:beforeunlesswhere时间状语从句 答案解析 【答案】很抱歉,登录后才可免费查看答案和解析!