He can$ 3 000 a year by writing stories to support a family of three people.A. spareB. aff

问题补充：

He can$ 3,000 a year by writing stories to support a family of three people.

A. spare

B. afford

C. earn

D. charge

答案：

A. spare

B. afford

(答案→)C. earn

D. charge

解析：动词辨析。A抽出，匀出；B买得起，承担得起；C挣得；D索价，受费；充电；句意：他每年挣3000元来养活一个三口之家。根据句意说明C正确。