Answers

Aug 19, 2018 - 12:25 PM
In some cases and in day to day speaking the ma may be omitted and the intonation changed to sound like a question, but this is for high level chinese learners who can change the intonation without changing the tone, so at this point of your learning you should add the ma, and the exercise should indeed have one.

Aug 27, 2018 - 12:56 PM
Thanks for reporting this bug Ashdani1994, and thanks for the great explanation Fabrice as usual!
The "ma" is indeed missing here, we'll make sure to add it in our next update, thanks again to both of you!!
The "ma" is indeed missing here, we'll make sure to add it in our next update, thanks again to both of you!!