While the police have already done a lot of investigation, much evidence ___   __.
#102763
A
is remaining to be confirmed
B
remained to be confirmed
C
is remained to be confirmed
D
remains to be confirmed
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---Why did you stop writing? --- I _____ my writing paper.
#102505
A
ran out of
B
have been used up
C
have used up of
D
have run out
I  in the house which  books and magazines.
#103943
A
am used to live;use to keeping
B
used to live;has been used to keeping
C
have been used to living;was used to keep
D
was used to live;was used to keep