Never in my wildest dreams_____these people are living in such poor conditions．

The computer was used in teaching. As a result, not only _______, but students became more interested in the lessons.

After several days of survey, the police still didn’t know the __________ of the killer.

You are quite free now, I think.— _____, I have tons of things to do.[ ]

Wow, I have never thought about travelling abroad alone.— .