81.The young man has gained a lot of k ____ from practice as well as from books.

80.London is the largest in area, c ___ over six

hundred square miles.

79.Since the a ____ landed on the moon, the moon has not been mysterious to mankind.

78.After the fire, she had nothing but the r____ fifty dollars in her pocket.

77.The new shoes m ____ him discomforted because they didnt fit his feet.

根据下列各句所给首字母完成单词,并注意词行变化.

76.I've never been to the r ____ whose Beijing food is delicious but expensive.