...the time Jack returmed home from England,his son ___ from...
4.By the time Jack returmed home from England,his son ___ from college.A.graduated B.has graduated C.had been graduating D.had granduated 答案 1.B bring down 降低,减少 政府已经采取措施降低日用品的高价格,以维护市场的稳定.2.B suggests 表明很多人在公共场所抽烟的事实表明我们需要进行一场...