While we were running on the playground, Jack suddenly stopped____ and lay on the ground,so we all stopped_____ what was wrong with him.

---Shall we go to Mount Tai next Sunday? ---I’d prefer ______ at home rather than _______.

Animals don’t like ______ cages.

—Do you prefer ___________ the new film The Artist with me? —No. I’d rather ___________ at home and listen to music.

—I’m sorry I forgot      the letter for you! I’m really busy these days”—It doesn’t matter, I’ll post it myself.”