读一读,画一画。 1. Let's put a triangle for always. 2. Let's put a circle for usually. 3. Let's put a square for sometimes. 4. Let's put a line for never. always usually sometimes never
【简答题】It‘ s a day to celebrate, a time to educate, and a way to make. a difference. Earth day was first observed on April 22, 1970. The tradition began in the United States and is now an international focal...