____five minutes____ before the last train left,we arrived atthe station.
Helen devoted herself _______ to her research and became a top scientist in the field of applied physics.
Vitamin D helps our bodies make a special chemical,and this special chemical,__________,affects our brains,making us feel happy.
. Everyone must have known the death of the waitress,________?
----Tony is such a selfish person. ----I agree. Never again _________ with him.
After driving for 20 miles,Jackson realized that he _______ in the wrong direction.