Halo teman! Perhaps it could not fit well with "cannot", because the Indonesian sentence would need to use "tidak bisa". So, your sentence would be, for example:
Saya tidak bisa menemukan kabel di sana.
The Duolingo sentence could have many other translations in different tenses, using "a" / "the" with singular and plural nouns, and just needing the verb "find" in single or compound forms.
Selamat belajar! :)
I wrote, "I didn't find the cable there," and was marked incorrect. I am always hesitant to submit a report saying my answer should be accepted because I am just learning. So my question is: if I wanted to refer to a specific cable and use the past tense, how would the most natural and/or grammatically correct sentence(s) be written in Indonesian?