He walked down the hills, and ________ softly to himself.

After school we went to the reading-room to do some reading, only to be told that it        .

Before coffee was introduced, Muslims used to drink a special kind of soup to _______ awake.

Only those who have reached the agreed standard for their event will______ as competitors.

— Tom is planning to buy a car. — I know. By next month, he        enough for a used one.