You've failed to do what you _____ to and I'm afraid the teacher will blame you.
You misunderstood me yesterday, Mary. I wasn’t ______ you when I blamed someone for the accident.
Professor Smith gave us a speech last month, ______he expressed his concern about the current global economic trends.
Susan came to the party yesterday, but it was already half past eight ______she turned up.
With all the work on hand, I ______to the cinema last night. How I regret it!
The two researchers originally set out to study the zebras in Africa and discovered a new species of tiger ______.