The first cellphone call was made by Martin Cooper in 1973.
I (go) to the movies yesterday.
I went to the movies yesterday.
I like (eat) tacos.
I like to eat tacos.
I like eating tacos.
Suzie's hair is (long) than her sister's.
Suzie's hair is longer than her sister's.
I (go) sailing twice in my life.
I've gone sailing twice in my life.
Almost six billion people worldwide own cellphones.
Cellphones are owned by almost six billion people worldwide.
What you (do) last week?
What did you do last week?
I'd like to travel around the world.
Tuxtla is (big) than San Cristobal.
Tuxtla is bigger than San Cristobal.
your mom (cook) Italian food?
Has your mom cooked Italian food?
Stores in the US sell 124 million phones every year.
124 million phones are sold by stores in the US every year.
I (listen) to music yesterday at 5:00.
I was listening to music yesterday at 5:00.
I decided to quit my job.
The iPhone X is the (expensive) cellphone.
The iPhone X is the most expensive cellphone.
I always (want) to try Thai food.
I've always wanted to try Thai food.
They have sold camera phones since 2002.
Camera phones have been sold since 2002.
I (watch) a movie yesterday when you (call) me.
I was watching a movie yesterday when you called me.
I should go now.
My friends and I (not play) football this season. We (play) basketball.
My friends and I haven't played football this season. We have played basketball.
Engineers have added a lot of amazing features.
A lot of amazing features have been added by engineers.
Where (be) you when the accident (happen)?
Where were you when the accident happened?
I'm looking forward to (meet) you.
I'm looking forward to meeting you.
Harry Potter is (good) book saga I've read. It's (good) than Twilight.
Harry Potter is the best book saga I've read. It's better than Twilight.
I (not see) the new Spiderman movie but I (see) the new Batman movie.