His father looks young, but in fact he is ______.

Tony, I am going to get married next month. —– _______________!

Don’tletthesadnessofyourpastandthefearofyourfuture ___thehappinessofyour present.

How many teachers are there in your school?—About two _________.

Are you ________ the dark? –Oh, yes. I always go to sleep with the light on.