It was playing computer games that cost the boy plenty of time that he ________ have spent doing his lessons.
We may have dreams because we have needs that are _____ in our daily lives.
The lower room was in darkness, but by _____ his way he found the bag.
It was only when her sorrow that Tom looked at her.
Once the poison is _____ , there is no further danger.
---What a large and bright room ! Is it a classroom? ---No, It _____ the students’ reading-room.