I found a mistake

English as a Second Language Feedback, Comments and Suggestions
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I come from Nanjing, China. My native tongue is Chinese .I want to learn english.

I found a mistake in “TOEIC listening part I, set 15, exercise 10”.
The man read the B (B) was "One of the men seems to be fueling up the aircraft. But the text is " One of the men is fueling up the aircraft.