The old town has narrow streets and small houses __________ are built close to each other.
It is known to all that________you exercise regularly, you won't keep good health.
—What would you do if it________tomorrow? —We have to carry it on, since we've got everything ready.
We all know how difficult it is for all of us to eat better, exercise more, and sleep enough________we know we should.
________,I have never seen anyone who's as capable as John.
You should try to get a good night's sleep________much work you have to do.