Question

— Your aunt often walks the dog in the morning.
— Yeah,        bad weather stops her.

A．when

B．unless

C．because

D．since

Answer 1

B

試題分析：句意：你的姑姑經常在早晨遛狗。是的，除非壞天氣阻止了她。when 當……的時候；unless              除非； because因為；since自從。所以選B。