Infinitive Phrase or Preposition Phrase

Identify the infinitive phrase in the sentence. - Are you planning to climb the mountain on Saturday?

• to climb
• on Saturday
• Are you planning
• to climb the mountain

Preposition or Infinitive?  - I have to run to the store for milk.

• Prepositional phrase
• Infinitive phrase
• This sentence has neither.

Preposition or Infinitive? We are so excited to see the exhibit!

• Preposition
• Infinitive
• This sentence has an one example of both

Identify the prepositional phrase. - I am driving to my boyfriend's house today.

• am driving
• house today
• to my boyfriend's house
• no prepositional phrase

Identify the infinitive. - My cat is going to sleep all day.

• is going
• My cat
• to sleep
• to sleep all day

Identify the infinitive phrase. - It's so lovely to go outside!

• to go
• to go outside
• so lovely
• no infinitive phrase

Infinitive phrase or prepositional phrase? - She went to the store for ice cream.

• Infinitive phrase
• Prepositional phrase
• This sentence has an one example of both

Is this an infinitive phrase or prepositional phrase? I am going to eat the whole pan of brownies!

• infinitive phrase
• prepositional phrase
• This sentence has an one example of both

An infinitive is 

• "to" + verb
• "to"
• "to" + noun
• verb

What is the infinitive in the sentence? - I am happy to see you buying that movie!

• to see
• am happy
• you buying
• no infinitive