If you are in the zoo, remember not to touch or go near the animals. Although some of the animals are cute, you _________ leave them alone.
---Which would you like, tea or coffee? ---_____ is OK. I really don’t mind.
---I think Miss Gao must be in the library. She said she would go there. ---No, she _____ be there. I have just been there..
It’s not necessary to ____every new word while reading. You can guess its meaning.
—_____ have you lived there? —Since 1970.
–I want to learn how to play the guitar. --Look, here is _____ advertisement about guitar lesson in the newspaper.