1. All ____of goods for daily use are available in the shopping mall.
A. kind B. variety C. varieties D. various
2. Do you know the difficulty the little girl had ______ to send her sick mother to the hospital in time?
A. on managing B. to manage C. having managed D. managing
3. That piece of music sounds quite familiar.Who______the violin upstairs?
A. has played B. plays C. is playing D. played
