Add commas where they belong in the sentences below

What image of late nineteenth century british society does the importance of being earnest

1. in which sentence is the underlined portion a predicate nominative? for astronauts, going into space to repair orbiting equipment becomes a challenge. for astronauts, going into space to repair orbiting equipment becomes tricky. for astronauts, going into space to repair orbiting equipment becomes challenging. for astronauts, going into space to repair orbiting equipment becomes frequent.

List three civil rights events that lorraine (or the hansberry family) was involved with: