Unless we prevent local people to reach the scene, they are likely to interfere with our job

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

Unless we prevent local people to reach the scene, they are likely to interfere with our job.

likely

to reach

with

Unless

Giải thích

Đáp án là B

from reaching To prevent smb from V-ing = ngăn chặn, phòng chống ai khỏi cái gì/ việc làm gì