I’m always ________ about what I say becausecareless remarks are likely to hurt others’ feelings.

Miss Wang is strict ____ us ____ our study.

With the price of houses, many people in big cities can’t afford to buy a house.

I can’t remember when exactly the Robinsons left _____city ,I only remember it was ______ Monday

Thanks a lot, Mr. Wang. I don’t know how to ________ the help you gave me during my stay here.— It’s my pleasure. Welcome to China again when you have time. [ ]