90%
Complete the camper's slightly embarrassing ghost story by selecting the correct option for each blank.
I was sitting by the dark campfire, convinced the woods were haunted, when I suddenly felt my phone _________________________ exactly once in my pocket. I pulled it out in a panic, only to see my best friend _________________________ me from the tent right behind me!
The correct answers are vibrate and calling.
Felt my phone vibrate: We use the bare infinitive (vibrate) after a verb of perception (feel) to describe a short, completed action. The clue here is "exactly once."
See my best friend calling: We use the gerund (calling) after a verb of perception (see) to describe an action that is currently in progress. The phone was actively ringing when the camper looked at it.