The students _______ busily when Miss Br
题型:选择题
问题:
The students _______ busily when Miss Brown went to get a book she _______ in the office.
A.had written; left
B.were writing; has left
C.had written; had left
D.were writing; had left
The students _______ busily when Miss Brown went to get a book she _______ in the office.
A.had written; left
B.were writing; has left
C.had written; had left
D.were writing; had left