Students are asked to _____ themselves in this boarding school and they are only allowed to go back home once a week. 
#78101
A
act
B
behave
C
perform
D
observe
推荐题目
They weighed the advantages of the operation ______ all the possible risks involved over and over again.
#66172
A
within     
B
except     
C
behind     
D
against
When you write to him, please _____ him. 
#80379
A
give my loves to
B
give my regard to
C
remember me to
D
give my wishes for