. It’s quite ____ of beginners to forget to use an article before a noun.

People were not allowed to enterthe reading room because it _______

I attend my friend’s coming-of-age ceremony, Mum—No, unless you see to ________ that you will be home before 10：00 P．M.

Make sure that the machine is kept where it is not ____ to children.

he little girl passed ______ PE test—She has tried twice, and the teacher will allow herto have _____ third try