27．In hot weather an old tyre can break again easily it’s mended．A. whenB. whereC. whichD

问题补充：

27．In hot weather, an old tyre can break again easily it’s mended．

A. when

B. where

C. which

D. that

答案：

A. when

(答案→)B. where

C. which

D. that

解析：考查状语从句。旧轮胎容易在修补过的地方再次坏掉。