What makes the subject masculine in this sentence?
Nothing. She/It are accepted as well...
I sat there thinking hard about this one for five minutes, decided to go for "she" and had it accepted, only to see it could also have been "he" and now I learn it could also be "it". haha. what a waste of brain capacity
I do not think so: You will remember this due to your effort while others may oversee this.
I say doesn't instead of does not and it is markes as an error. That is not fair :)
That should not happen. Contractions are handled automatically by Duolingo software. But they can have a bug...
Please submit a report ("My answer should be accepted...") in these cases.
Would "he does not wait until the last day" be OK?