If I (see) a spaceship, I (take) a photo
This horror movie is the (funny) one I have ever seen.
The government is investigating the sightings - The sightings
Scientists (study) reports about UFOs for many years.
Scientists discovered a new species of alien. - A new speicies
Halloween (is / are) celebrated on October 31st every year.
There (is / are) many fun Halloween games you can play.
I believe that they (not, want) to harm us.
If I see a ghost, I (will run / would run) away.
The aliens invaded our planet. - Our planet
This year, my friends and I (to organize) a Halloween party together.
The haunted house was (scary) than I expected.
If it (to rain) on Halloween, we (to stay) home and watch scary movies.
Every Halloween, children (to dress) up in costumes and (to go) trick-or-treating.
Last year, I (to carve) a pumpkin for the first time, and it (to look) amazing!
If aliens (come) to Earth, we (try) to communicate with them.
My favorite Halloween candy (is / are) chocolate bars.