When is a pronoun in the subjective case?

Avenn diagram would be best to take notes on which of the following informational passages? a).pet ownership improves life. b).active reading improves test scores. c).will weights or walking keep you fit? d).the day before mount ruapehu erupted.

Where did moon shadow’s father get the name windrider?

What is the message? how does langston hughes convey the message in this poem?