Fill in the blanks with one of the following words. Change the form where necessary.用所给单词的适当形式填空（区分大小写、时态、语态）。1. Who’s been rumors?2. The machine seeds evenly and quickly over the whole field everyday.3. A teacher knowledge.4. The farmer seeds on the fields yesterday.5. This species of plant is widely in this area.6. The workers salt on the icy bridge last night.