【题目】We complained ______the police about the loud noise from the bar.

【题目】__________ breaks the law will be punished.

【题目】It was difficult to tell exactly _______ the saying began, but it is possible that it was in the theatre or movie industry.

【题目】Someone is ringing the doorbell. Go and see_________.

【题目】The news came _____ my cousin was chosen chairmen of the Students’ Union.

【题目】When I try to understand ________ that prevents so many children from being happy, there seem to be three causes.

【题目】The reason I have to go is my mother is ill in bed.