是What's your favourite vegetable?还是What's your favourite vegetables?这里的vegetable 应该用单数还是复数?

What's your father?是啥意思 what's your name?是问候语吗? What's your father?是问什么? what's your mother? what's your mother what’s your major? what s your favourite What’s your name? What's your name? WHAT'S YOUR AGE? what's your what's your idea? what‘s your name what's your speech What's your dream? what’s your What's your h_______? What's your hobby?