I was deep in thought, so I didn't notice _____.
Bears fat stores throughout the summer and fall to have energy enough to last them through their winter sleep.
Half of surveyed in 16 countries say they go first to their closet friend to share their deepest wishes and darkest fears.
Nothing could be done, he_____ absent.
He ________ the exam, but he was too careless.
These chairs may look good, but they’re very un-comfortable _____.