Some families raise cows, and _________ grow wheat.
− Good morning, sir! __________________?− I’d like to buy a sweater for my daughter.
Her elder sister works for a company ___________ her home.
Is there ________________ with your computer?
Our school library ____________ from 8 a.m to 5:30 p.m., but the reading room _____________ only in the afternoon.
Eric is not going to Nanjing by __________ plane. He is taking _________ train.