问题

My parents live in a small village. They always keepcandles in the house _____ there is a power out. [ ]
A: if
B: unless
C: in case
D:so that
B: unless
C: in case
D:so that
正确答案是:
同类题型
If you happen to get lost in the wild, you’d better stay ______ you are and wait for help.
. — He speaks French because he once lived in France. —Really? How long _____ there?
The girla purple skirt is Jim’s sister. [ ]
_________ is your father? — He is fine.
I really ________ Tina, we haven’t seen each other for about three years.