Astronauts ____________ for ways to visit planet Mars. (look)
are looking
I have a chemistry exam tomorrow, so I ____________ right now. (study)
am studying
Nowadays, engineers ____________ to develop air conditioners that are eco-friendly and use less energy. (try)
are trying
These days, researchers ___________ the structure of DNA to understand genetic diseases. (study)
are studying
In this day and age, more and more people __________ hybrid cars because of the increasing gas prices. (drive)
are driving
For the first time, humans ________ on the moon on July 20, 1969. (walk)
walked
Alper Gezeravcı _________ into space this year on January 19, 2024. (go)
went
We _________ to our teacher right now as he explains how Albert Einstein __________ 10 hours a day. (listen/ work)
are listening/ worked
Last weekend, me and my family ____________ the science fair and _______ solar energy systems. (visit/ see)
visited/ saw
I _________ on my school project at the moment, but my sister already ___________ hers yesterday. (work/ finish)
am working/ finished
_____ you _____ the news on the discovery of a new planet? (see)
did/ see
My sister __________ chemistry in university. Now, she is a chemist. (study)
studied
What is the answer to this question; ''What is the cat doing?''
The cat is driving a car.
Nowadays, scientists ____________ medicine to help with Alzheimer's disease. (develop)
are developing
The solar eclipse which happens once every 18 months _______ place on April 8, 2024. (take)
took
During their research, the scientists __________ a new type of microbe they had never seen before. (discover)
discovered
