Question

Cassie views the constellation with her telescope. The constellation is Aquarius. She received the telescope for her birthday.Cassie views the constellation with her telescope. The constellation is Aquarius. She received the telescope for her birthday. Combine the three sentences by adding appositives and/or appositive phrases and punctuating accordingly.

Answer 1

Cassie views the constellation, Aquarius, with her telescope that she received for her birthday.

Explanation:

The subject would be "Cassie" and the appositive in this sentence would be "Aquarius" and "that she received for her birthday

Answer 2

Here is the combined sentences from the given three sentences above:
Cassie views the constellation, Aquarius, with her telescope that she received for her birthday. The subject would be "Cassie" and the appositive in this sentence would be "Aquarius" and "that she received for her birthday". Hope this answer helps.