The key answer of exercise 1

b)

1. flick through, cast an eye over, dip into
2. pore over, scrutinise, read up on, plough through (see negative connotation in definition above), peruse

c)

• pore over → a report, a sports report, a love letter / email, a catalogue, an auction website
• flick through → a magazine, a book to see if you want to buy it, a photo album
• scrutinise → a contract, a bank statement, a legal document, a proposed merger
• cast an eye over → someone's writing to check what they've asked you, a draft document checking quickly for errors, junk mail in case there's anything of interest
• read up on → the grammar to be covered in the next English class, a tourist site you are going to visit
• dip into → a book of poems, a book of short stories, a magazine to read one article
• plough through → a report, a grammar book, revision notes before an exam
• peruse → a contract, a bank statement, your medical report, a catalogue / auction website