"They are washing the car outside."
Translation:Kint mossák az autót.
For the English sentence there are lots of correct translations: Odakint/kint mossák az autót. Mossák az autót odakint/kint. Az autót mossák odakint/kint. Mossák odakint/kint az autót. Hungarian is a very flexible language as you can see. No need in personal pronouns (ők), because the conjugation defines exactly that we use here plural third person. Yes, and odakint is a very common translation for outside.
I do not have a Hungarian keyboard and when I am writing a comment here there is no possibility to click on the correct accented letter, like for the exercises. It would also be cumbersome to bring up a table with alternative symbols and pick up the right one each time. This is why I am writing ö or ü. Also the answer is not rejected when there is only a mistake on the accent. Maybe someone can indicate keyboard shortcuts for the missing characters, that would be useful.
Sajnos, "ő" and "ű" are not part of your standard character set. But you can generate the rest one way as a last resort. This one works on windows systems, with actual keyboards that have a numerical keypad. I don't know about other systems, I have not tried. Hold down your "Alt" key, and type one of these 3-digit codes on your numerical keypad, not on the numbers on top of your keyboard:
Alt-129 - ü
Alt-130 - é
Alt-148 - ö
Alt-160 - á
Alt-161 - í
Alt-162 - ó
Alt-163 - ú
You can try other codes, at your own risk, you may find stuff you like. Basically you are keying in the ASCII codes of those characters.
153 and 154 just gave me "Ö" and "Ü".
Unfortunately there are no shortcuts to ő or ű with a US English or International English keyboard layout.
If you are using Windows, you can add a Hungarian keyboard layout, and switch to it when typing Hungarian though remembering the layout takes some effort. You can type English just fine with a Hungarian layout, though you have to watch the "y" because it is switched with "z". I got keyboard stickers to help. Windows also has a virtual onscreen keyboard you could use with the Hungarian layout.
hungarian.typeit.org works too for occasional use.
I found a solution which is implemented on most operating systems:
The US International Keyboard layout with AltGr dead keys option. Instead of memorizing Alt-codes, you just press AltGr (right Alt) and type the accent you want (double quote for umlaut, Shift-2 for double lines), release, and then type the letter you want modified.
So "AltGr-Shift-2 o" will give you ő and "AltGr-' e" will give you ê, etc.
Windows also has a regular dead key option, so no AltGr, but it's more annoying.