I like to __________ experiments during chemistry lessons.
do
My older sister works in a university laboratory. They are ____________ how plant cells survive in freezing conditions.
researching
I’d love to ____________ something and become famous.
invent
The scientists have ______________ a new species of butterfly in the Amazon rainforest.
discovered
The explorers ____________ how the ancient Egyptians built tombs.
investigate(d)
