第六十七组
clean up 打扫；清除
hundreds of 数以百计的
be lacking in 缺乏
break into tears (cheers) 突然哭(欢呼)起来
in proportion to 按……的比例
in connection with 与……相连
in correspondence with 与……联系(通信)
be advantageous to 对……有利
be beneficial to 对……有益
in no way 决不
put out 扑灭
in debt to sb. 欠某人的债
be it that 即使
assure sb. of sth. 使某人对某事放心
entrust sb. with sth. 委托某人某事