英文文法-被動語態請益2013/1/7 - 考試

不好意思,小弟才疏學淺，想請教各位大大幾題英文文法試題(出處:王怡華-文法練習1000
題)

1.By whom------this paper written?
(A)has (B)was (C)ought (D)should
答案:(B),請問該題如何還原呢?

2.When all the students-----,the professor began his lecture.
(A)sit (B)were sit (C)seat (D)seated
答案:(B),為何是"被坐"，而不是選(A)?

3.Yesterday I was------an Englishman.
(A)spoken to by (B)spoken by to (C)spoken to (D)spoken by
答案:(A),為何不可選(C),請問該題如何翻譯?

4.The teacher is said to-------his students before.
(A)scold (B)scolded (C)have scolded (D)be scolded
答案:(C),假設題目沒有"before"的話，是否答案為(A)?

5.We have-----him to be more careful in everything.
(A)suggested (B)hoped (C)proposed (D)expected
答案:(D),不明白為何選它

感謝各位!!

--