The rise in electricity costs has _______ our difficulties in carrying out the project.
#72127
A
added up
B
added up to
C
added
D
added to
推荐题目
. I thought of him as my best friend until he ______ to the boss.
#72670
A
ave me off 
B
ave me out
C
ave me away
D
ave me up
It is uncommon that she is a person ___________up late . 
#73481
A
accustomed to stay
B
accustomed to staying
C
used to stay
D
addicted to stay