đây là cách làm và giải thich bạn có thể lấy vở ra ghi vào cho nhớ nha:

21 Our math lesson (start) _______ at 7:15 tomorrow morning.

→Our math lesson are going to start at 7:15 tomorrow morning.(câu có dự đinh hay kế hoạch dung be going to+V_nguyên thể)

22 Hien doesn’t like (live) _______ in the city because it is noisy.

→Hien doesn’t like live in the city because it is noisy (sau doesn't + V chia ở dạng nguyên thể)

23 Why do you buy a lot of food? – I (have) _______ a party tonight.

→Why do you buy a lot of food? – I am going to have a party tonight.(câu có dự đinh hay kế hoạch dung be going to+V_nguyên thể)

24 Ten dollars (be) _______ enough for that shirt. 25 In my opinion, people (use) _______ more electric cars in 2025.

→Ten dollars is enough for that shirt. 25 In my opinion, people (use) _______ more electric cars in 2025.(ten dollar đc coi là một đơn vị nên chúng ta chia ở dạng nguyên thể )

26 She had better (stop) _______ watching too much TV.

→She had better stop watching too much TV.(sau had better+V_nguyên thể)

27 Can you help me (close) _______ the window, please?

→Can you help me close the window, please?(dau can dùng động từ ở dạng nguyên thể vì nó là động từ khuyết thiếu)

28 They (bring) _______ us many books last Sunday. 29 I tried (make) _______ an omelet this morning but it was horrible.

→They brought us many books last Sunday. 29 I tried made an omelet this morning but it was horrible.(quá khứ đơn)

30 You (not believe) _______ all the advertisments on YouTube. Many of them are not true

→You don't believe all the advertisments on YouTube. Many of them are not true(hiện tại đơn)