In this sentence, why is "they do not see the wall" incorrect? Given that this is the present tense lesson, I am surprised that both of the examples using the they form of virar have been past tense examples.
it's a problem. They turn = eles viram / they saw = eles viram.... so, they should have used a sentence involving turn, not see, then it really becomes past :S for this conjugation (3rd plural person) they become the same!
The dictionary hints don't even mention the "see" meaning...so I used "turn" and was wrong.
And elsewhere in this lesson, there was a sentence where the "correct" translation was something like "they turn the professor"...nope.
They made an error when they "fixed" it. You are now marked "wrong" if you say "They do not turn the wall". It says the correct answer is "They did not see the wall." Which is incorrect, in that this is unit on present tense verbs.