----You’re coughing badly. Have you gone to see a doctor? ---No, but I .
News came that the Netherlands launched its first-ever “intelligent bicycle”
---Excuse me, sir. Could you please tell me _______? --- Sorry, I don’t know. You can go to the information desk.
---Jim, can you finish your homework on time? ---______. I can finish it.
We are sure to enter a better high school ________ we work hard.
We must protect water from being _________, because it’s the source of life.