They are both very nice.I don’t know ___

If the doctor is ______ this afternoon, I will take my little daughter to him for a thorough checkup.

As a businessman, David is so busy that rarely ______ time for this family.

You can only be sure of_________ you have at present; you cannot be sure of something _____ you might get in the future.

Since then, finding ways to grow morepeanuts ______ his life goal.