His parents live ______ in a small house, but they don’t feel ..
You needn’t worry ____ about your Maths. Work harder and you will do better.
---It seems that Mr. Wu is standing there. ---It ________ be him because he called me from Canada just now.
---Mr Johnson asked me to remind you of the meeting this afternoon. Don’t forget it!---OK, I _________.
Can you tell me _____?
Please don’t smoke here. The sign _______ “No smoking.”