问题：
[单选题] I try to _____ my friendship with Sarah, but it’s difficult to keep a relationship going when we are separated by such a long distance.
Amaintain
Brespond
Crevise
Ddeprive
[单选题] I try to _____ my friendship with Sarah, but it’s difficult to keep a relationship going when we are separated by such a long distance.
Amaintain
Brespond
Crevise
Ddeprive
