It will take a lot of time, so you must be ______, young man.
.I am not sure ____ . Which of the following is not right?
Do you know if she ____to visit us ?I think she will come if she____ free tomorrow.
Take care! If you lose _______on the swing, you may fall down and hurt yourself.
The rich woman is always ___________her wealth(财富). Nobody is willing to talk with her.
We all found _____useful ______ English aloud every morning.