难度：★   考点：短语辨析和固定搭配

　　1. You don't have to worry about me. I'm old enough to            myself.

　　A. look after           B. look for           C. look up             D. look at

　　2. it's impolite to cut in line when you  ________  a bus at the bus stop.

　　A. ask for             B. look for            C. care for           D. wait for

　　3. My grandpa is sleeping. Will you please_____the radio?

　　A. turn down    B. turn up    C. turn on

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