问题

Mum, can I go out to play for a while–No, you can’t, ________ you finish your homework.

A:until
B:if
C:unless
D:because;

正确答案是：

同类题型

The killer was caught at a pub ______ he was surfing the net, ______ relaxed us all.

The engineer __________ my father works is about 60 years old.

____ her leg the last time, Brenda decided not to go on the school skiing trip this year.

Do you play ____ soccer in your free time —— No，I like music.I often play ____ guitar in my free time.

______is your English teacher—He is ___________old.