Mr.Smith used to smoke____but he has given it up recently.

问题描述:

Mr.Smith used to smoke____but he has given it up recently.

b、heavily b 严重地 a、seriously 严肃地、认真地 b、heavily 沉重地、猛烈地、大量地 c、badly 严重第、糟糕地 d、hardly 几乎不 因为抽烟