Work hard , you will fail the exam .
---I think Miss Lin must be in the library. She said she would go there.---No, she __________be there. I have just been there.
---I didn’t know this was a one-way street, officer. --- .
---Would you like to go bike riding with us tomorrow? ---Sure, ____ I am busy.
About ________ of the workers in the factory were born in the ________.
---Which of the films do you like best?---I will see . They’re both old and boring.