The writer was so in her work that she didn’t notice him enter the room. [ ]

The woman _____ her boss of having broken the labor law because he fired her when she was pregnant.

Jack, can you tell me how to use the digital camera—______. Let me have a look.

What are you looking for—I’m looking for the music CD ________ you lent me yesterday.

You can find almost whatever you need at the new shopping mall, ______ is always busy at the weekend.