Bruce,how many students are there in your school?—Mmm, about.

Why are you standing, Alice?—I can’t see the blackboard clearly. Two tall boys are sitting _______ me.[ ]

I’m going to learn the piano when I retire.—That sounds_____ a good idea.[ ]

Does your sister like red?–Yes. This red skirt belongs to ______.

Bob usually gets up at seven _______ the morning. [ ]