A number of high buildings have arisen ______ there was nothing a year ago but ruins. 
#67909
A
where
B
when
C
before
D
until
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________________, I was so careless that it got loose and was hit by a car.
#69646
A
While I walked the dog
B
While I walking the dog
C
While walking the dog
D
While I am walking the dog .
A brilliant idea occurred to him, ___ to his research in the lab.
#67725
A
while devoting
B
while devoting himself
C
while he was devoted
D
while devoted
If he ___________ on time, we will go without him.
#40990
A
doesn’t come
B
don’t come
C
didn’t come
D
comes