. By 1820, there were over sixty steamboats on the Mississippi river, _______ were quite luxurious

Tại sao ở hoạt động 2 của bài 3 :Teenagers câu 1,3,4 động từ lại thêm ed 

1.There are many people in the big city
->There are lots___________

like usually summer What is it in?

Write a complete sentence using the words and phrases given in each of the following questions. (0.6 point)

Question 1: I / fond / read / stories / famous scientists. 

Question 2: They / spend / a lot / time / do / DIY projects / their parents. 

Question 3: Teen stress / might / come / conflicts / friends / siblings. 

Complete each second sentence so that it means the same as the given one. (0.4 point)

Question 1: The dog eats its food more slowly than the cat. 

➝ The cat __________________.

Question 2: He plays the guitar well, but he doesn't like performing in front of others.

➝ Although __________________.

Write a letter (80-100 words) to a friend who is experiencing stress before exams to give him / her some advice. (1 point)

Dear ……………….., 

I hope this letter finds you well. I heard that ………..

...

Best wishes, 

Write a paragraph about 100 words about your method study in English.