单选题
I think being alone is never really a bad thing, ______ you've got something positive to do.
A. but for B. provided that C. in that D. in case
【正确答案】
B
【答案解析】我认为如果你手头有一些有意义的事情可以做的话，独处也未尝不是件好事。
[答题点拨] but for要不是。provided that假如。in that因为。in case万一。