Помогите срочно!!!
1. I study/have been studying German for a year.2.We were working/ have been working all the morning.3. It rains/ has been raining for two days.4. He donated/ has been donating money last year.5. The government is trying / has been trying to reduce pollution for years.6. I have been volunteering/ have volunteered to clean out ponds since 2018.