单项选择题
A．the difficulties in teaching spelling B．the role of spelling in general language development C．the complexities of the basic writing skills D．the necessity of teaching spelling
A．to write carefully B．to de as teachers say C．to use dictionaries frequently D．to avoid using words one is not sure of
A．the importance of developing writing skills B．the complexities of spelling C．the correct way of marking compositions D．the relationship between spelling and the content of a composition