It is our duty to -(study) hard.

学习 时间:2026-11-10 11:39:18 阅读:8554
It is our duty to _(study) hard.

最佳回答

欣慰的小蚂蚁

孝顺的小鸽子

2026-11-10 11:39:18

it's one's duty to do sth。所以用原形 study