Tom was injured in a traffic accident and is now being treated in hospital.How _____ it be When was it?A can B must C may D shall选什么,为什么?

问题描述:

Tom was injured in a traffic accident and is now being treated in hospital.
How _____ it be When was it?
A can B must C may D shall
选什么,为什么?

a
how can it be?翻译成这怎么可能.