问题：
The adoption of orphans and physically challenged children has been a subject of public
debate _____ a fire in an unregistered orphanage last month.
A．according to
B．in case of
C．ever since
D．such as
The adoption of orphans and physically challenged children has been a subject of public
debate _____ a fire in an unregistered orphanage last month.
debate _____ a fire in an unregistered orphanage last month.
| A．according to | B．in case of | C．ever since | D．such as |
参考答案：