Heat expands metals.

Metals expand on heating.

You must speak the truth.

Intransitive verbs have no direct object.

Is the verb in this sentence transitive or intransitive?

I walked to the park yesterday morning.

Freida has lived in three different countries.

She advised me to consult a doctor.

Let’s invite your cousins as well.

I waited for an hour.

I received your letter in the morning.

I am going to send her some flowers.