`1`. My holidays are nearly over. Next week I'll be back at work.
`→` adverb + prepostion
`2`. I love to look up the stars in the sky at night
`→` Cụm từ “ look up” có nghĩa là “ tra cứu, tìm kiếm”.
`3` . I was sitting in the kitchen when suddenly a bird flew in through the open window