It's clear that the thief was seen into the room that night.A. wentB. goC. goingD. to go

问题补充：

Its clear that the thief was seen into the room that night.

A. went

B. go

C. going

D. to go

答案：

A. went

B. go

C. going

(答案→)D. to go

解析：不用to 的不定式宾补在谓语变成被动语态时，一定要有to，所以选D。