---Does Rita feel better today? ---Her condition has improved, but it will be some time before she returns to school.
Mary has __________ herself __________ for the party.
I __________ the names of plants.
The bus was due to __________ at 5 p. m.,but it arrived one hour late due to __________ by the heavy fog.
The professor devoted all his life __________ the treatment of AIDS.
He was __________ down for several days after he heard the bad news.