— What does the sign over there say? — No person _________ bring drinks into the student computer room. 

Persons under 18 _____ not be employed in night work in the US.

When we were young, every evening my brother and I ___ stay at home waiting for my mother?

—Could I keep this book for another week?—Of course you        .

They were determined to carry out the plan at first, but then we ________ persuade them to change their minds.