He has little acquaintance _______ music , while he has a wide knowledge ____ painting．

Tom _____ home at 5:00 in the afternoon.

Why are you standing there, Kangkang? —I can’t see the blackboard clearly. Two tall boys are sitting______me. [ ]

All of us should _______our teachers as well as our parents.

_________that we will _______free computer training during the holidays.