The post office is far here. ______ you can't go there _______ foot A. because; on B. so; by C. so; on
Mr Black is _______ father.
There _______ a Chinese book and two maths books on the desk.
Oh, it’s time _______ class.
– What colour is your _______? -- It’s white.
Miss Fang is _______ English teacher. _______ is a good teacher.