obile phone has become a major means of communication, _____us to keep in touch as well as to surf the Internet to keep us _____of the latest news.

Professor Smith. I didn’t finish theassignment yesterday.—Oh, youhavedone it as yesterday was the deadline.

You_______ to the meeting this afternoon if you have something important to do.

I am not sure if she________me to her party. If she________me, I will be pleased..

________may be，one sometimes makes mistakes.[ ]