Listening to loud music at rock concerts _____ caused hearing loss in some teenagers.
#85680
A
is
B
are
C
has
D
have
推荐题目
 _____ New York _______ London are two of the largest cities in the world.
#86151
A
Either; or  
B
Both; and
C
Neither; nor
D
Not only; but also
There _______ a meeting tomorrow. 
#44096
A
will be
B
is will be
C
is will
D
will have