—Why are you still here? It’s already seven o’clock.—Because I ________my work. Don’t worry. It’s almost done.
Work hard, _____ you’ll catch up with others.
---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.