Why does Mary look so worried today?—I’m not sure, but she _____ a small accident driving here.

you may have, you should gather your courage to face the challenge.

Principal White has been working in the school for about 20 years, all his energy to teaching and researching as well as the running of a healthy school.[ ]

I told Sally how to get there, but perhaps I ________ for her.

These countries will join one another against terrorism, was agreed to at the international conference.