Giúp mình với cần gấp ạ B. Grammar: Amount of or number of? We use amount of with uncountable nouns. Number of is used with countable nouns (Amount đi với danh từ không đếm được, number đi với danh từ đếm được) Fill in the blanks with number or amount 1. She reduced the of hours she works each week in order to take care of her elderly mother 2. Can you give me an estimate of the .of people who will attend the party? 3. The of time he spent at work every Saturday was worth it when he was rewarded with a year-end bonus. 4. What was the exact ..of people you invited to your birthday? 5. What .would you pay for a new house? 6. We travelled a .. of miles before we realised we were lost. 7. Please pay the full (=of money) by the end of the month. 8. A large .. of children are likely to be watching this programme. 9. We've had an enormous ..of help from people.