Miss Wang, I went to your office at 11:45 yesterday morning ,but you weren’t in. — I _____with a student in the classroom at that time.

Have you seen Bill recently? — Oh, no! Nobody knows ______ he is! Everyone is looking for him.

________ is your new watch? 一It’s only twenty yuan.[ ]

I am staying __________home ________next week. [ ]

What are you doing right now?—The same ________ you. Doing homework.[ ]