He was puzzled by this phenomenon. He began to try every approach _________ the best way of working it out.
Mary is one of the girls who ______ always on time.
It was so cold that they kept the fire ______ all night.
. Some of the doctors are paid almost ______ as the nurses.
.We should try our best to ______ those people after the disaster.
______ in a small temple ______ Dr. Bethune saved the wounded solider.