Professor Smith has written some novels, but he is _____ known for his plays

Neither my father nor I ____ at home

When he got off the crowded bus,he found his pocket________and the disk in it with the important documents gone.[ ]

Somehow, the old man had ________ a dangerous secret, one which could not be discussed in a room on a military base.

I often go to work bike, but today I go to work a bus.