It is fairly ________ in Africa for there being a group of expert musicians ________ by others who alsojoin in the performances.[ ]

She ______ behind the door in order not to be found. Two minutes later she was safe again.

下列各句中，没有语病的一句是

If I work hard at my lessons from now on, can I do well in them—Sure. ___________.

______ Wang Feng looked after the old woman a whole year moved us all.