___ we are sure about is the need to prevent children from being spoiled.
If you win the competition, you will be given ____ to Europe for two.
—What do you think of the book?—Oh,excellent.It's worth ___________ a second time.
The library needs __, but it will have to wait until Sunday.
A left-luggage office is a place where bags _______ be left for a short time, especially at a railway station.
Sir, you ______be sitting in this waiting room. It is for women and children only.