Who _______ rock music to country music two years ago.

I hear there will be _____talk on English study tomorrow morning.—Do you mean ____ speech our teacherasked us to listen to

Without proper lessons, you could __________a lot of bad habits when playing the piano. [ ]

wly-built subway is always crowded with passengers going home from market, most of them _____ heavy bags and baskets full of fruit and vegetables.

adam Curie did the science experimentagain, she was more careful where she_____ a mistake.