问题
Sun Tao has had a_______ English course, but he still doesn’t know
A:six-month; how to spell this word
B:six months; how spell the word
C:six-months; how he should spell this word
D:six-month; how should he spell the word
B:six months; how spell the word
C:six-months; how he should spell this word
D:six-month; how should he spell the word
正确答案是：
