Habitudes écoresponsables et adverbes de fréquence anglais

Fill in the blanks to describe eco-friendly habits using the correct form of the verbs in brackets and the adverb of frequency.

1. Sarah (to recycle) $90\%$ of her waste. (always)
2. We (to turn off) the lights to save $100\%$ of energy when we leave a room. (often)
3. My brother (to walk) to school instead of taking the car, saving $2$ kg of $CO_2$ per trip. (sometimes)