—Why is the classroom so dirty?—Sorry，sir. It yesterday, We forgot to do it.
#39874
A
doesn’t clean
B
didn’t clean
C
isn’t cleaned
D
wasn’t cleaned
推荐题目
-Be careful! You might fall into the water. -Thank you. I____.I______ so close to the pool.
#41678
A
didn't know; am standing
B
don't know; am standing
C
didn’t know; was standing
D
didn't know;Would stand
Dick, it's the _______ time in three days that you _______ the same mistake.
#36458
A
second; have made
B
second, make
C
two; have made
D
two, will make
---Can your father drive? ---Yes, and he to work every day.
#42167
A
is driving
B
drove
C
drives
D
has driven