Question

鹿茸

請問這一題謝謝（關於時態）

318
18. The students
(A) had written; left
(C) had written; had left
busily when Mrs. Brown went to get a book she
(B) were writing; had left
(D) were writing; has left
honnonod yesterday but the driver
in the office.
really careless

Answer 1

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我不會

Mrs.Brown went to...為她跑去拿書→過去式
she had left in the office 為她去辦公室→過去完成式

那麼「她去辦公室」這個動作會比「跑去拿書」早發生，因此比過去式更早發生的時態要用過去完成式。