Broadband Internet didn’t use to be / weren’t so popular in the 1980s.
didn’t use to
Last month the scientists_____ specimens of some sea spiders from Antarctica.
collected
Make sure you____ notes when we are at the museum.
take
We all tried to find the best_____to the problem. SOLVE
solution
Linguists and psychologists are cooperating to ____ a new theory of language learning.
develop
We did / used to do a lot of exercises last weekend.
did
Do you know who _____ the electric guitar?
invented
Take_____ of your desk before you buy a new computer screen. MEASURE
measurements
This month two teams of archaeology students are _____ research in South Africa.
doing
My computer / crash / while / I / download / a song.
My computer crashed while I was downloading a song.
I want to study _____at university. CHEMIST
chemistry
A _____ is someone who works to protect plants and animals. CONSERVE
conservationist
Tom / lose / his smartphone / when / he / run / in the park.
Tom lost his smartphone when he was running in the park.
Mr Marco works as a_____at the University of Alaska. PHYSICS
physicist
Last winter the temperature used to fall / fell to minus 28 degrees Celsius.
fell
My brother used to spend / was spending a few hours a day online.
used to spend