1.   Tom said: “I want to buy a pocket calculator for my father.”

      .................................................................................................................

2.   My mother said : “I think it won’t rain tomorrow.”

      .................................................................................................................

3.   The nurse said: “The patient in this room didn’t obey your orders, doctor.”

      .................................................................................................................

4.   They said : “We can’t meet you here either today or tomorrow.”

      .................................................................................................................

5.   Mr. Brown said : “Our trip cost us two thousand dollars.”

      .................................................................................................................

6.   He said to her : “ I can’t find my hat anywhere in this room.”

      .................................................................................................................

7.   My father said to them : “My secretary is going to finish this job.”

1. Hung has COVID-19, so he can’t attend the meeting.

     @ If  __________________________________________________________________________.

2. “My father likes eating fish everyday” Tuan said.   @ Tuan said ___________________________.

3. I invited Kate to my birthday party.   @ Kate _______________________________________________.

4. “I often use a dictionary to look up new words.” John said.

     @ John said  ____________________________________________________________________.

5. Peter said, “I cannot come here today.”→ Peter said __________________________________

6. They should do all the homework to prepare for the test.

→ All the homework ____________________________________________.

7. Because she isn’t rich, she can’t buy that vila.  → If she _______________________________________.

1. Before she went to bed, she (finish) ____________________ her homework.

2. Minh suggested (have) ______________________ a video conference this week.

3. This time next month she (go) _____________________ on a business trip to Australia.          

4. It was a nice day, so we decided (have) _____________________ a party in the garden.

5. This time tomorrow we (learn) English.Do you enjoy (write)                     letters to your friends?

6.    He has decided (install)               the Internet to look for information more easily.

7.    We intend (have) ______________________ a holiday in Ha Long Bay.

8.    We’ll need (bring)                                    more food and drinks for the trip.

9.    You should avoid (spend)                        much time (play)                    computer games because you can lose your skills to communicate with people face to face.

10.  He plans (book)                an appointment with the doctor. He needs (examine)                         his health.

11.  Our teacher didn't mind (explain)                        the exercise until we understood it yesterday.

12. Most people (leave) _____________________ before the volcano erupted.

13. When I arrived at the station, the train (leave)_________________.

14.After I (finish) __________ my breakfast, I went to work.

15.The trees were dead because it (be)_____________dry all the summer.

16. This exercise must (do) ______________________ carefully.

Một gen có tổng số liên kết Hidro là 3450 .Trong gen , hiệu số % nu loại  A  vs nu ko bổ sung vs nó bằng 20% tổng số nu của gen. trên mạch 1 của gen có G=150nu, A=450nu. tính số lượng từng loại nucleotit trên

cách 3

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