Question

I am going to Tian’anmen Square to watch the raising of the national flag with Lin Tao ________ it rains early tomorrow morning.

A．if

B．unless

C．when

D．since

Answer 1

B

試題分析：句意：。我要與林濤去天安門廣場觀看升國旗，除非明天清晨下雨。If如果；unless除非；when當……的時候；since自從。所以選B。