单项选择题
My grandfather was a（）teacher,it′s the only job he′d ever done.
A.profession B.occupation C.amateur D.career
单项选择题 After living here for so long.I（）the noise.
单项选择题 Under no（）should we surrender to our enemies.
单项选择题 When facing difficulties and obstacles,we should never act in a（）way.
