When asked about their opinions about the schoolmaster, many teachers would prefer to see him step aside ________ younger men.(2011·湖北,30)
It was in 1969 ___ the American astronauts first succeeded in landing on the moon.
Country life provides him with peace and quietness, ______ what he can’t enjoy living in cities.
What the teacher said in class set all the _____ a lot.
By the time I _____the railway station, the train _____.
_____ teaching in a university, he also spent some time teaching in a night school.