Bill is not _______brother. He is __________brother.

I don’t know how to begin a talk with Betty. She can sit all day long ______ a word. [ ]

? Do you know the most ancient city in China ─ Xi’an well? ? No, this is the first time I ___________ here.

Is your aunt?－No. is very heavy(很胖).

Are you busy today?—Yes, I have ______ homework to do.