情态动词语法填空
1. Jean        have kept his promise. I wonder why he changed his idea.2. Jane       have come to the party, but she       not find the exact time.3. So many mistakes in your homework! You      (be) more careful.4．Her brother       be at home now, because he was seen playing basketball in the stadium just now.5．---I can’t understand why our boss is late.  ---He               (miss)the early bus.
should
could
could
should have been
can’t
may have missed
6. She didn't answer the phone, sh ...