Multi-clause sentence?

Is this a multi-clause sentence:

I was late for the school assembly.

• yes

• no

Is this a multi-clause sentence:

I completed my homework so I could go to play with my friends.

• yes

• no

Is this a multi-clause sentence:

We can have pizza or burgers.

• yes

• no

Is this a multi-clause sentence:

I wanted to stay longer, but I had to leave.

• yes

• no

Is this a multi-clause sentence:

I bought a snack and a water bottle from the vendor.

• yes

• no

Is this a multi-clause sentence:

The sun was shining, so I decided to go for a walk.

• yes

• no

Is this a multi-clause sentence:

She likes to dance, but she doesn’t enjoy singing.

• yes

• no

Is this a multi-clause sentence:

The cat slept peacefully, yet the dog was awake.

• yes

• no

Is this a multi-clause sentence:

I would like some milk and a cookie.

• yes

• no

Is this a multi-clause sentence:

I had a coffee and a piece of cake.

• yes

• no