题目内容
What _________ you _________ at 9∶00 last Sunday?
[ ]
A.
are; doing
B.
did; do
C.
were; doing
D.
do; do
答案:C
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题目内容
What _________ you _________ at 9∶00 last Sunday?
are; doing
did; do
were; doing
do; do