当你想知道这些物品是谁的时,问:A. Whose are these?B.Whose are those?C.Who are they?
--- Are you happy with your grades in the math exam?---Not at all. I can’t have ________________.
---What do you often do_______classes to relax yourselves?---We often do eye exercises, listen to music or do some running around the school.
She thinks herself a top student.The sentence structure is________.