Come on, please give me some ideas about the project.—Sorry. With so much work ____ my mind, l almost break down..

Mr. Park, I know I am late, but please allow me to explain it to you, ________？

It was today’s activity ________ let me know the importance of teamwork.

“Did you hear someone knocking at the door?” “Yes, I did. I heard him______three times.”[ ]

The little boy kept _____ and his mother was ______.