_______in the ocean, it becomes powerless once it is on the beach.

This is _______ English book and that is _______ Chinese book.

Water can absorb and give off a lot of heat without big changes in temperature, thus creating a __________ environment.

Friends are those__________ makeyou smile，alwaysopen their hearts to you and encourage you to succeed

You just think of yourself! You kept us waiting for you for over two hours. —I’m sorry that you _____________think so.