• 2022-06-06
    [u]       [/u] the animals [u] [/u] our duty.
    未知类型:{'label': 'questionDesc', 'content': '请选择正确答案。', 'isMemberControl': 0, 'type': 181}
    A: To protect; are
    B: Protecting; are
    C: To protect; is
    D: To protecting; is