When they had finished playing, the children were made to _______ all the toys they had taken out.
19. It is reported that China has created the first man-made sun in the world recently, ______ ?
18. ----- Has Mary finished writing her article ? ----- No, and it _____ before class was over.
17. I really _____ thank you enough. It’s been an amazing day.
16. The computer program is a puzzle to me. The more I think of it, the more questions I think of _____.
15. Realizing I would be late , I quickly dressed my son and _____ my bag, went to work.