The Internet is increasingly accessible at school and at home _____many parents and teachers are sometimes not as prepared as we should be to warn children about Internet threats

Hello! May I speak to Mr. Brown —- ___________

Thank you for inviting us.Tell your wife that she gave us a perfect party.—I______. See you later.

Because of the environment problem，we plant more trees cutting them down．

We should encourage our students _____ hard instead of ____ too much time playing games.