_____ teens are using the Internet for both social and intellectual development, they are also facing significant challenges on how to manage their relationships online.

He is such an unselfish man. You cannot help but ______ him. [ ]

I’ve read through this book several times, but I will read it ______ so as to get better understanding.

_____ I toured Zhangjiajie, I was deeplyimpressed with its beautiful scenery

Why not go to Lao She Tea house tonight — ______