--Be careful! You might fall into the water.--Thank you. I____.I______ so close to the pool.
#39793
A
didn't know; am standing
B
don't know; am standing
C
didn’t know; was standing
D
didn't know;Would stand
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Tina _______ England with her parents three years ago. 
#38005
A
visits
B
visited
C
will visit
D
was visiting
I don’t know if Mr. Wang ________here tomorrow . If he ______ , please tell me .
#40518
A
comes , comes
B
will come ,comes
C
comes , will come
D
will come ,will come