1.——Is you brother an English teacher? ——Well,he______. A.used to B.used to be 2.——I think Mr.Lin may be in his office. ——No,he can’t be there.I saw him ________there just now. A.leave B.leaving 原因要写下!
第一题,题目中应为your ,选择B,完整的回答是he used to be an English teacher,used to是过去是,be后的部分可以省略,所以选B 第二题,选A,see sb do和see sb doing都有,但是区别在于do强调的是结果,就是说事情已经发生,而doing表示正在进行并且是可持续的动作。显然leave there的动作已经结束,所以选A。...