He always comes late to work, which, I think, is ______ he should improve in the future.A. where B. what C. why D. when本题不太可能选 why 和 when,但如何区分是选 where 还是 what 呢?
一道时态选择题—— you play badminton very well!——many thanks! when in university, i ______ it for four years.A. learned B. have learned C. had learned D. would learned答案为A,C为什么不行,再过去一段时间应该对现在造成影响啊?谢谢
I was so ______ in today's history lesson. I didn't understand a thing. A, confused B. neglected C. amused D. amazed请问:这四个选项都是什么意思,不好选啊!为什么都是过去分词呢?我想选A,可是为什么不是 confusing ?