Which sentence begins with a dependent clause?

1. When we go to school in the morning, we need to take our lunches and our backpacks.
2. The children decided to play soccer in the park near their house
3. My friends and i are going camping today, and tomorrow my cousin is going to join us!
4. My dad is looking for his shoes while our dog is buying them in the garden

1. When we go to school in the morning, we need to take our lunches and our backpacks.

The sentence that begins with a dependent clause is:

1. When we go to school in the morning, we need to take our lunches and our backpacks.

To identify a dependent clause, we need to understand that a dependent clause is a group of words that contains a subject and verb but cannot stand alone as a complete sentence. It relies on an independent clause to complete its meaning.

Let's analyze each sentence to determine which one begins with a dependent clause:

1. "When we go to school in the morning, we need to take our lunches and our backpacks."

In this sentence, the dependent clause is "When we go to school in the morning." It cannot stand alone as a complete sentence because it relies on the independent clause "we need to take our lunches and our backpacks" to complete its meaning.

2. "The children decided to play soccer in the park near their house."

This sentence does not begin with a dependent clause. It starts with the independent clause "The children decided to play soccer in the park near their house."

3. "My friends and I are going camping today, and tomorrow my cousin is going to join us!"

This sentence does not begin with a dependent clause. It starts with the independent clause "My friends and I are going camping today."

4. "My dad is looking for his shoes while our dog is burying them in the garden."

This sentence does not begin with a dependent clause. It starts with the independent clause "My dad is looking for his shoes."

Therefore, the sentence that begins with a dependent clause is sentence 1: "When we go to school in the morning, we need to take our lunches and our backpacks."