Duo does not accept 'I invite' as an alternative to ' I am inviting'. Reported 03-05-2018
They are giving this "typo" error with the green "you are correct" strip: you have an extra space I'm invitinga lot of friends..... No way to report, so here.
marcy65brown: I got this too, with my answer ''I invite a lot of friends...." - it said I had an extra space after invite, and I should put "I invitea lot of friends.....!" Obviously an error on DL's part that needs to be fixed.
Same here. I put 'I'm inviting lots' and it was marked correct with an extra space, should be 'I'm invitinglots'. I did report it, although the options to report weren't pertinent.
In this sentence, "friends" is the direct object. When the DO is a person or pet, Spanish uses an untranslated "personal a" before it.
I see my dad. Veo a mi papá.
We admire our teachers. Admiramos a nuestros profesores.
Do you hear your dog? ¿Oyes a tu perro?