- 试题详情及答案解析
- Students in their school ___________ trees on Tree Planting Day every year.
| A．require to plant | B．require planting |
| C．are required to plant | D．are required planting |
- 答案：C
- 试题分析：句意：每年在植树节，他们学校的学生被要求植树。require sb to do sth“要求某人做某事”，其被动形式为sb is/are required to do sth.“某人被要求做某事”。结合句意，学生是被要求植树，故用被动语态。故选C。
考点：考查被动语态的用法。