—I can’t find Xiao Ping where did you see him this morning?—It was in the library he stud

问题补充：

—I can’t find Xiao Ping, where did you see him this morning?

—It was in the library he studied．

A. that

B. where

C. which

D. the one

答案：

A. that

(答案→)B. where

C. which

D. the one

解析：本句是省略了that的强调句型。在被强调部分中library后有一定语从句，补充完整应为It was in the library （where he studied ）that I saw him this morning.我们在平时的训练中一定要注意强调句型的这一用法。