Mr．Jones was so late that his dinner got cold; his wife ______ warm it up．

Mr．Jones was so late that his dinner got cold; his wife ______ warm it up．

1. A.
   must
2. B.
   had to
3. C.
   ought to
4. D.
   might

Mr．Jones was so late that his dinner got cold; his wife ______ warm it up．

       A．must               B．had to          C．ought to      D．might

Mr．Jones was so late that his dinner got cold; his wife ______ warm it up．