If you have ( ) time ,would you make some coffee for me?

If you have ( ) time ,would you make some coffee for me?
A.any B.some
这里为什么不用any?不受后面的疑问句影响么？
Welcome to my home.（改成同义句）
You ( )( ) to my home.
为什么这里不能填are welcomed被动语态？而要用 are welcome形容词？
Mark Twain was his pen-name.(反义疑问句）
Mark Twain was his pen-name,wasn't (
后面那个空为什么不是it而是he？