Which B goes across a road,railway line or a river?
B_ _ _ _ _
問題二
Which C is a large strong building?
C_ _ _ _ _
問題三
Which D is something you ask for when you’re lost?
D_ _ _ _ _ _ _ _ _
問題四
When something is N,it means that you have to do it.
N_ _ _ _ _ _ _ _
更新1:
問題二有其他的答案嗎?