Question

【题目】These workers built the building last year. （改为被动语态）

The building ________ ________last year.

Answer 1

【答案】was built

【解析】

此题要求改为被动语态。由last year可知，此题应该用一般过去时的被动语态。其结构是：was/were+动词的过去分词。本题的主语The building是单数，因此be动词用was。build的过去分词为built。故填：was; built。