Many animals sleep a lot when young, but sleep much less when they get older, just is the case with human being.
No sooner had I come to the office _____ the boss told me that I was fired.
Not only _____ a promise, but also _____ it.
Have you adapted _____ in a different country?
He won’t wear a hat _____.
It was not until mid-night _____ he went back home after the experiment.