Can it have been on the playground ________ you lost your watch ?

Can it have been on the playground ________ you lost your watch ?

A.that

B.on which

C.where

D.in that

答案及解析： A

解析：

考查强调句型it is +被强调部分 +that….。句意：就是在操场上你把表弄丢了吗？