Half of the books ________easy for the students to read.  
#44200
A
are
B
is
C
am
D
be
推荐题目
Why _________ he like pandas?
#43906
A
is
B
are
C
do
D
does
More than one student ___ that experiment.
#86086
A
has finished
B
have finished
C
are finishing
D
were finishing