Microblog is a platform ________ people can expresstheir thoughts and communicate with each other by sending posts.

The vegetables are good _______ us. So please eat________.

Be careful when you cross this busy street. ________, you may get run over by a car.

We ________ the whole day in Disneylandyesterday.

Mike felt sad because he failed his exam yesterday.—I’m sorry to hear that. Let’s ____.