Do remember to be ________. We must avoid any possible risks when doing this dangerous chemical experiment—burns, poisonous gases or cuts from broken tubes.
—Did you see a man in black pass by just now? —No, sir. I __________ a newspaper.
I __________ there little more than a week when I set to work with the scientist.
They __________ two free tickets to Canada, otherwise they’d never have been able to afford to go.
—Is there anything wrong, Bob? You look sad. —Oh, nothing much. In fact, I __________ of my friends back home.
The flowers were so lovely that they __________ in no time.