he does a__(draw)of his mother

he does a__(draw)of his mother
he does a__(draw)of his mother

he does a__(draw)of his mother
drawing 画 do a drawing = draw
和do some shopping 用法相似

drew

drawn

drawing 画 do a drawing = draw

drawing

冠词a的后面要跟名词
drawing是draw的名词形式，所以...

drawing