问题
13.______studying abroad can be hard, it can broaden your understanding of the word
A:If
B:While
C:Because
D:Since
B:While
C:Because
D:Since
正确答案是：
同类题型
The moment 2011 BWF Super Series Masters Finals________ open, all the fans and the viewers cheered
The other day，my brother drove his car down the street at________I thought was a dangerous speed
___ the room, the nurse found thetape-recorder ___.
I haven’t seen _____ this since I began to collect stamps. [ ]