—Excuse me, but could you please turn the radio down?—Sorry, I       you could hear it.
#102834
A
don’t realize
B
haven’t realized
C
didn’t realize
D
hadn’t realized
推荐题目
At this time tomorrow ____over the Atlantic.
#99290
A
we’re going to fly
B
we’ll be flying
C
we’ll fly
D
we’re to fly
Experiments of this kind ___in both the U.S and Europe well before the Second World War. 
#102411
A
had conducted
B
have conducted
C
have been conducted
D
had been conducted