现在进行时 — 英语填空题

根据句意，用括号内动词的现在进行时形式填空。 1. Look! The …

The city is reducing plastic waste. At the recycling center, workers ___ (sort) …

用所给动词的适当形式填空：Look! Many people ___ (plant) trees on th…

—Listen! Someone ______ about the polluted river at the town meeting right now…

请用括号内动词的正确形式填空。Look! The river ___ (get) cleaner, …

根据句意，用 have 或 has 加括号中动词的适当形式填空（过去…