.Our boss suggested we clerks ______ goodsales methods and his words suggested that ______ did the best ______ the bestprize.

By the time of last year, she ______ the piano for five years.

We were swimming in the lake _____ suddenly the storm started

253 Great changes ________ for the latesttwenty years in China

He was beaten by his father because of being naughty ____, he became silent