The Sound of the Wind in the Trees

The word hum, H-U-M, describes a low, continuous sound. A rumble goes up and down like the wheels of a truck on rough ground. The correct answer is rustle. And before we go, here's an idea to help you remember new vocabulary. Choose one of your favourite songs in your first language and write some new words for it in English. Yes, and then practice singing your song. There's more about this at bbclearningenglish.com.