Nowadays，it is common to see people staring at their mobile phones instead of reading a real book，＿＿＿＿＿＿many experts are worried．
#75642
A
when
B
for which
C
where
D
about which
推荐题目
Julie was good at German, French and Russian, all of _____ she spoke fluently.
#77851
A
who
B
whom
C
which
D
that
We shouldn’t spend our money testing so many people, most of ____ are healthy.
#77186
A
that
B
which
C
what
D
whom
He won’t want to eat it unless he’s really hungry, in ______ case he’ll eat almost anything．
#78160
A
whose
B
which
C
what
D
when
(2013·四川高考)Nowadays people are more concerned about the environment ________ they live.
#75404
A
what
B
which
C
when
D
where