---How many _______do you have? ---Let me see, my father has two brothers.
Don’t throw plastic bags towards the animals in the zoo.
---Is that Mr Smith? ---It __________ be him. He is in New York on business these days.
The boy looked __________ because he didn’t pass his maths test.
---When will Uncle Sam come to see us? ---He’ll see us this weekend. He _________ me by email.
--Why didn’t Peter _________ his homework? ---He said he had lost his workbook. I think it is an excuse.