Which sentence contains a preposition? 1.) thomas edison gazed at the bulb. 2) thomas edison invented many things. 3) thomas edison set up hid own laboratory. 4) thomas edison was a man who inspired others

In which two sentences does the author use an ironic tone toward the subject

Which statement about paragraph is accurate? a they are always focused on the main idea. b they are always the same length c they are always indented d they always contain a topic sentence

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.