托福听力必背重要习语（三）

call off -cancel
　　cheer up - be happy
　　come down with - become sick with
　　come into -receive,especially after another’s death
　　come up with - think of
　　count on - depend upon
　　count out - eliminate
　　die down - become quiet ,become less
　　do without - manage without something
　　drop by - visit informally; pay a short visit