— Have you read this book?— Yes. But that one is ________ worth reading.
I often see him steal things from our supermarket. Do you think I ______ report it to the manager?
. --- Excuse me, but I want to use your computer to type a report.--- You _____have my computer if you don't take care of it.
--- Who is the girl standing over there?--- Well, if you ______ know, her name is Mabel.
Children under 12 years of age in that country _____ be under adult supervision when in a public library.
--- Isn't that Ann's husband over there?--- No, it ______ be him---I'm sure he doesn't wear glasses.