— Have you seen ________ newspaper? I left it here a moment ago.— Is it ________ orange one? I think I saw it somewhere.
_______ necessary for us _______ our environment clean and tidy.
She was afraid of __________SARS because it was dangerous.
-----Who taught _________Japanese? ----I learned it by ______________.
Humans can’t live _______air.
---Oh, you have a headache and a cough. _______have you been like this? ---Three days.