--An explosion at a coal mine of Panzhihua killed at least 43 workers and left another 3 missing.--Yes,_______ news came as _______ shock to us all.
_______homework did we have to do that we had no time to take a rest.
Only then___________ how much damage had been caused.
In the dark forests ________, some large enough to hold several English towns.
Little _____ about his own health though he was very ill.
Well ____ know him and well ____ know me.