问题补充:
27. As five children under 10 got drowned in a southern province, it is not socially for
parents to leave children unattended at that age.
A. acceptable
B. affordable
C. sustainable
D. believable
答案:
(答案→)A. acceptable
B. affordable
C. sustainable
D. believable
解析:可联系答.案.网客服索取。