I don’t think I can understand this book. The subject it deals with is not familiar ______ me.
—I found the mark rather frightening. —______ It frightened me to death just now.
Mr. Liu is very ______ with his students as he always tries to make his classes lively and interesting.
We're all ready to put it into operation. ______, we're going to take action as fast as possible.
The big snow caused great _______to the people living in the south of China, ________some of them homeless.
Mr. Smith, ______ in the factory for thirty years, is on the way back to his village.