Bài 1: Sửa lỗi sai.

1. Do not go to the mountains without no => WITHOUT sturdy hiking boots.

2. Please try to entirely revise => TO COMPLETELY REVISE your work before you leave for school.

3. Mary prepared => WAS PREPARING dinner when I arrived, so we were able to eat immediately.

4. She said she would buy a new table's => TABLE lamp for her living-room.

5. He spoke so => SUCH good Chinese that he surprised everyone.

6. If I saw => HAD SEEN him. I would have reminded him about his appointment.

7. They might => COULD go to the store a few minutes ago.

8. If Bob had received his check on time, he had certainly => WOULD HAVE CERTAINLY bought a new suit.

9. Although she was rich, she wore few => LITTLE jewelry.

10. When my baby => YOUNGER brother got very ill, I must have called the doctor immediately.

11. Since he has bought => BOUGHT a new car, he has been driving to work everyday.

12. The building was as => SO large that we had difficulty finding his office.

13. To my surprise, Bill has the least => THE FEWEST stamps of anyone in his class.

14. If she had told me that she did not have => HADN'T HAD enough money, I would pay for her trip last summer.

15. Like other people in our area, we did not eat many => ANY fruit in the winter.

What the " cick"?

Theo đề bài ta có :

SBT + ST + H = 150

SBT + SBT = 150

SBT = 150 : 2 =  75

Kết quả của phép trừ đó là :

   75 : ( 1 + 2 * 1 ) = 25

mk học lớp 7, chưa học đg trung bình

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