. –Is there anything wrong , Bob ? You look sad . --Oh, nothing much. In fact ,I _____of my friends back home .
We are now in senior three. I think it’s time we ______ more efforts for the college-entrance exams.
---Look! There comes our head teacher. ---That ______ be him. He is in Indonesia.
All things ______, your sister has better performances than you.
Seeing Mary can cheer you up. She seldom appears ______ happy.
She wears ______ long hair while her husband wears _______ long beard.