Mark the letter A, B, C, or D to indicate the underlined part that needs correction in each of the following questions On Discovery Channel last night, they showed an informative p...

Câu hỏi :

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

A. On

B. they showed

C. medical imaging

D. would  

* Đáp án

B

* Hướng dẫn giải

Đáp án B.

sai vì không rõ “they” ở đây là ai. Sửa lại thành “there was”

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