To understand the grammar of the sentence,you must break it______ into parts. 
#4913
A
down
B
up
C
off
D
out
推荐题目
Only when __________________ permission _______________ allowed to enter the lab.
#4817
A
a teacher has given; are the students
B
has a teacher given; are the students.
C
has a teacher given; the students are
D
a teacher has given; the students are
.. ________the cake________five parts. We will share three of them and leave the rest to Jack. 
#4783
A
Separate …from
B
Take …from
C
Divide … into
D
Divide …from