Weixin(微信) chatting on the mobile phone by many people, and it’s very helpful. A. is used for B. is used to C. is used as
—Tom looks very sad. What’s wrong _______ him? —An accident happened _______ his father this morning.
The boy felt very _______ and fell _______ as soon as he lay on the bed.
The little boy ________ his seat to an old lady on the crowded bus.
Li Ming , I have some good news you.
Uncle John promised to buy me ______ MP4 as my birthday present.