Card Anderson discovered two atomic particles that he identified while studied cosmic rays

Câu hỏi :

Choose A, B, C, or D to indicate the underlined part that needs correction in each of the following questions.

A. discovered

B. that

C. studied

D. cosmic rays

* Đáp án

C

* Hướng dẫn giải

Đáp án C

Studied => studying

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