Melissa, __________ the alarm clock for 6 o’clock, or you will oversleep and be late for the train

Only after Mary read her composition the second time_________ the spelling mistake.

are many famous cultural relics in our country, many _______ thousands of years ago.

This singer sang many songs, ________ some of Liu Huan’s.

He just _______ the headlines because he was too busy to read the whole newspaper.