the great mother kept waiting for four hours in the heavy snow to save her sick child.A.

问题补充：

, the great mother kept waiting for four hours in the heavy snow to save her sick child.

A. It depends

B. Take it easy

C. It is OK

D. Believe it or not

答案：

A. It depends

B. Take it easy

C. It is OK

(答案→)D. Believe it or not

解析：考查交际用语。A看情况；B不要担心；C好的；D信不信由你；句意：信不信由你，那个伟大的母亲在大雪中等了四个小时挽救她生病的孩子。根据句意说明D正确。