What happened?—They didn’t ____ each other and had a fighting.

Children’s Day is _________ June 1st. [ ]

My father’s office is at the top. I can see the whole city ______ the office. [ ]

Have you heard about Volunteer? —Sure, A volunteer is someone _________ is willing to offer help without being paid..

Jack, could you help me when the plane will take off on the Internet?-I’m sorry , ,my computer doesn’t work..