Would rose be the correct choice because there is no object again,
The curtain rose/raised on the last act of the class play.
Right again!
In this sentence, the correct choice would be "rose" because it refers to the action of the curtain moving upward to reveal the last act of the class play. To determine this, you can consider the verb used in the sentence and its subject.
The verb in the sentence is "rose/raised," which is the past tense of the verb "rise/raise." The subject of the verb is "curtain." Now, if we look at the definition of these verbs, we can determine the correct choice.
"Raise" means to lift or elevate something, while "rise" means to move upward or ascend. In the context of the sentence, it is the curtain that is moving upward, not someone lifting it. Therefore, "rose" is the more appropriate choice.
To further confirm this, you can imagine the action happening and ask yourself, "What is moving up? Is it the curtain or something else?" In this case, it is clearly the curtain.
So, in summary, "rose" is the correct choice because it accurately describes the upward movement of the curtain.