I can’t see the words . on the blackboard. Please turn on the light.

Shown together with those products, some advanced ones made abroad included______, which greatly appealed to the visitors coming from all the corners of the world．

“Do you have any questions ________ clear to you?” the teacher asked.

This book is ________for a six-year-old child to read.

Many people are _____________ in the ____________ story.