"a new garage"
The word جَديد (new) is jadiid, /d͡ʒa.diːd/. It's sort of like how "jah-deed" would be pronounced in English.
And كَراج (garage) is karaaj, like the American pronunciation of "garage" but with a k.
Bug: If you tap a word and tap it again to remove it, it will leave a space at the beginning of the line, thus making Duo think there is an extra word at the beginning - for which you'll be marked wrong.