Every student is required to watch the teacher carefully before ___ the chemistry experiment.
#70129
A
performing
B
taking
C
picking
D
having
推荐题目
My opinion is ________the same as yours.
#64438
A
and so on
B
on the other hand
C
at risk
D
on the whole
Jack told us that his class ________ sixty-four students. 
#65938
A
made up
B
made of
C
consisted of
D
consisted in