—He is fluent in English because he once stayed in London。 —Really ?How long ____ there ?
I told him it was a bad idea, but Tom’s _____ look showed that he just never listened.
As autumn announces its coming, the trees _____ turn yellow, which means winter will draw near too.
Jane said, “What did he hear about a week ago?” Jane asked ____ about _____.
It was the fourth time that Tom _____ in the maths exam.
We are flying at _____ altitude of 6,000 meters and perhaps we will get there at _____ midnight.