It was not until she came to see us ____
题型:选择题
问题:
It was not until she came to see us ____ her mother was ill in bed.
A.when we knew
B.that did we knew
C.that we knew
D.that did we know
It was not until she came to see us ____ her mother was ill in bed.
A.when we knew
B.that did we knew
C.that we knew
D.that did we know