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Scientists have ______ a lot of research into renewable energy sources.  

Scientists have ______ a lot of research into renewable energy sources.<

Câu hỏi

Nhận biết

Scientists have ______ a lot of research into renewable energy sources.
 


A.
done
B.
solved
C.
 carried
D.
 made
Đáp án đúng: A

Lời giải của Luyện Tập 365

Câu hỏi liên quan

  • The word

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  • There has been a great increase in retail sales,_____________________ ?<

    There has been a great increase in retail sales,_____________________ ?

  • The phrase

    The phrase "keeps sellers on their toes" in the passage mostly means "______".

  • He_______________us but he was short of money at the time.

    He_______________us but he was short of money at the time.

  • The boat was sailing north when a terrible storm_____________ .

    The boat was sailing north when a terrible storm_____________ .

  • Long ago, women were_________to vote in political elections.

    Long ago, women were_________to vote in political elections.

  • Tom:

    Tom: "___________________ "
    Mike: "I won't say no!"

  • Standing on the tip of the cape,____________________ .

    Standing on the tip of the cape,____________________ .

  • The examination was not very difficult, but it was_____________________

    The examination was not very difficult, but it was_____________________ long.

  • We must push the piano to the corner of the hall to_____________________

    We must push the piano to the corner of the hall to_____________________ our party tonight.