She looked at the professor and wondered where she him.A. sawB. has seenC. seesD. had see

问题补充：

She looked at the professor and wondered where she him.

A. saw

B. has seen

C. sees

D. had seen

答案：

A. saw

B. has seen

C. sees

(答案→)D. had seen

解析：句意：她看这位教授并且想知道她曾经在哪见过他。分析曾经在哪里见过，体现为现在完成时，故选 D