单项选择题
Your T-shirts found a ready market （） the eastern part of our country.
A.on B.in C.at
单项选择题 JuniorAchievementhas（）differentstagesinitsdevelopment.
单项选择题 Thefollowinghintsmayhelpyoustayenergized，oratleast（）untilyoucanmakethetimeforrest.
单项选择题 （）avacationisalwaysagoodwaytogetrelaxationandrefreshment.
