All of us thought _________ no use talking about some unpractical matters frequently.
He cut off the electricity immediately he found the dangerous situation, thus ____ a fire accident.
But at other moments you will find him gentle and weak, _____ he cries about the lost lives of people drowned in ships that have sunk.
They form a polar molecule, ____ is, ____ with a slightly positive end and a slightly negative end.
They find themselves surrounded by colorful rocks, fishes, seashells and plants, all ____ slowly in the blue water.
Even though the pure water is ____ gives sea water its main properties, the salinity of sea water affects both its weight and freezing point.