Look and fill in the gaps
----- Nội dung ảnh -----
**Phrases of the Moon**
**Quiz?**
**Look and fill in the gaps.**
**Given words:**
full moon, new moon, first quarter moon, waxing crescent moon, waning gibbous moon, last quarter moon, waning crescent moon
**Circle the correct option.**
The phrase 'Once in a blue moon' refers to something that happens regularly/rarely.