—Would you like to go hiking with us tomorrow?—Sure, __

试题详情及答案解析

—Would you like to go hiking with us tomorrow?
—Sure, ________ I am busy.

A．since

B．unless

C．when

D．until

答案：B

试题分析：句意：你想和我们一起去远足吗？当然，除非我很忙。Since自从，既然；unless除非；when 当…的时候；until直到。所以选B。
考点：考查连词。