.—Dear Sir, how can I remember the new words well? —Try to ______ at least an hour each day for learning new vocabulary.
--- Julia, what were you doing when Anna called you? --- I ________ my housework and was starting to take a bath.
The flowers his friend gave him will die unless _________ every day.
________, or we will be late for the meeting.
Though it was in the midnight, ________ there were a lot of people in the street.
The ground isn't wet. It ________ have rained last night.