【正文】
ast month. 答案 :had learned changes (take) place since 1996. 答案 :have taken told me he (live) in Beijing since he was born. 答案 :had lived was the first time I (visit) the Great Wall. 答案 :had visited Ⅱ. 單項(xiàng)填空 1.(2021 遼寧 ,34)By the time Jack returned home from England,his son from college. graduated been graduating graduated 提示 :考查時(shí)態(tài)。 by the time 引導(dǎo)時(shí)間狀語時(shí) ,若從句用一般過去時(shí)態(tài) ,則主句要用過去完成時(shí)態(tài)。句意 :當(dāng)杰克從英格蘭回到家里的