Translation:What are the Belgian reporters traveling by, ship or airplane?
Is the article mandatory when translating to English? As far as I understand, in Hungarian the article in this context doesn't necessarily force article. Like when we learned Az angolok lány szépek can also mean T̶h̶e̶ English girls are pretty. In case I'm right, why is What do t̶h̶e̶ Belgian reporters travel by, ship or airplane not accepted? Please advice.
Please try to understand that you cannot use the exact same antecedent in different languages due to different logic. In english the "traveling by" is the correct term to define an action with any transportation device (by plane, by bike, by bus). //However, you say "on foot", because it's a part of your body, but that's a partial exception.//
Also, traveling is longer than a minute, hence the present continuous, eventhough in both cases the hungarian translation would be exactly the same.