单项选择题
Many people were angry with the government（）it decided to pull down a historical building.
A. when B. while C. before D. till
单项选择题 —Who is late this time —（）you ask Susan, of course.
单项选择题 （）his address, I can' t send this book to him.
单项选择题 The journey around the world took the old sailor nine months,（）the sailing time was 226 days.
