There are many choices to make in life but _______ is more important than what goes on in your heart.

Now old Henry is very sad, so he doesn't want to do         .

－How is Helen in the new school?－She is doing very well. There is         to worry about.

＿＿＿used to be thought that the earth was square. 

They were all asleep.         of them heard the sound.