This is an illness that may result in total blindness if .
#84319
A
being left untreated
B
left untreated
C
not left treating
D
not having left untreated
推荐题目
The athletes spent as much time getting trained as they __ studying.
#83762
A
were
B
had
C
did
D
disliked
Only at that time how much time she had wasted.
#81919
A
Mary did know
B
did Mary know
C
does Mary know
D
Mary does know
Little what you said. I wish you had repeated it!
#83789
A
did I understand
B
I understood
C
I did understand
D
have I understood
— I went to see a film yesterday. — Oh, did you? _________ . .
#81697
A
So I did
B
I did so
C
So do I
D
So did I