[ Types of Sentences ]
Explain the punctuation rule used in this sentence:
Before I brush my teeth, I always floss.
A. A comma is needed because this is a compound sentence and it joins two dependent clauses.
B. A comma is needed because this is a complex sentence and the dependent clause comes first.

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Shhh! Be quiet. Tom …….
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Joe went to the park on Saturday.
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The package ___ by the delivery service yesterday.
A. was delivered
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