I have a headache.(就划线部分提问)

问题描述:

I have a headache.(就划线部分提问)
who has a headache?
还是:who have a headache?

应选Who has a headache?
原因:疑问词who作主语时,通常看作单数形式.如:
Who is going to visit the factory.
Tom and Mary.
因此本题的答案为:第一句.