The ________ of the cottage were covered with ________．

A.roofs ; leafs

B.roofs ; leaves

C.rooves ; leafs

D.rooves ; leaves

答案及解析： B

解析：

roof的复数形式是直接加s构成roofs，同类词还有gulf, belief, chief等，而leaf的复数形式是将f改为ves，同类词还有knife, shelf, half, wolf等。