While we were running on the playground, Jack suddenly stopped and lay on the ground, so we all stopped what was wrong with him.A. to run; to see B. running; seeing C. running; to see
The boy found a wallet on the ground and stopped _________.
Jim is unhappy, do you know_____?
Mr. Green told us____ too much time____ reading novels.
My mother was cooking while I____ the radio.
Lucy does her homework very ________. She is ________ than Lily.