

Der Kühlschrank ist schon wieder leer.
[deːɐ ˈkyːlʃraŋk ˈɪst ˈʃoːn ˈviːdɐ ˈleːɐ̯.]
The fridge is empty again.
Ist dein Glas schon leer?
[ˈɪst ˈdaɪ̯n ˈɡlaːs ˈʃoːn ˈleːɐ̯?]
Is your glass empty already?
Der Zug war heute fast leer.
[deːɐ ˈtsuːk ˈvaːɐ̯ ˈhɔɪ̯tə ˈfast ˈleːɐ̯.]
The train was almost empty today.
"leer" is in the lesson "Properties" (Level 26), along with 9 other useful words. LinDuo has 180 topic lessons like this one, 2,375 words in total. Every word has an illustration, a transcription and pronunciation in a female and a male voice. Just 10–15 minutes a day is enough to learn them all. Free, and works offline.