Mom, I wonder ________.—Baby, I think you should study harder.
_______ you _________have a robot in your family in the future
Are you familiar(熟悉) with the music?— Yes. There was ______ time _____ this kind of music was quite popular. [ ]
My mom was mad at me last night. What shouldI do—Please say sorry to her________.
Tom as well as two of his classmates _____invited to the party.