. _____is known to us all is that the old scientist, for____ life was hard in the past,still works very hard in his eighties.
I actually believe that you_______ in hospital now if you had worn seat belts at that time.
You’d better put the medicine in a top drawer to make sure it would not be______ to the children.
— Do you need the dictionary too? — ________.
It’s impossible that you achieve your goal without effort, ________?
______, his mother has to take care of him at home.