1.小丽已经学了7年英语了
Xiaoli__has____already_studied__English__for____seven years.
2.自从他开始工作以来,他就一直在这家公司上班.
He was worked in this company_since_____he__went__ _to__ _work_____.
3.直到校长出现,那两个调皮的男生才停止讲话
The two naughty boy did't_stop__ _talking__until the headmasterappeared