That children ______meet with setbacks is a matter of necessity as they_____, so parents don’t worry about that.

If you spend the spring sneezing, take a look at your plate. Some foods _____ make allergies worse.

Must we finish all the homework today or tomorrow?                    – You ____ worry about it. You may hand it in next week. 

 … Come to supper with us, Peter. … Great! I _______ bring a bottle of wine.

  —The winner is a tall and thin boy with glasses!—Well，it________ be Mike.  He doesn’t wear any glasses.