Interested in Language
"Retired soccer player Zidane said that he ___ happy to do something for children."
A.would be B.could be C. should be D. must be
It's from a grammar excercise book.
To me, this seems like a bad mulitiple choice question. Intuitively, I would choose A. But there is really no solid reason to say why all other choices are wrong.
What do you guys think?