The students ______ busily when Miss Brown went to get a boo
The students ______ busily when Miss Brown went to get a book she ______ in the office.
选项:
a、had written … left
b、were writing … has left
c、had written … had left
d、were writing … had left
选项:
a、had written … left
b、were writing … has left
c、had written … had left
d、were writing … had left
可能相似的问题
你能帮帮他们吗