问题
单项选择题
A sailor on board（）from appendicitis and required operation immediately.
A.was suffering
B.is suffering
C.has suffered
D.has been suffering
答案
参考答案：A
搜题请搜索小程序“爱下问搜题”
A sailor on board（）from appendicitis and required operation immediately.
A.was suffering
B.is suffering
C.has suffered
D.has been suffering
参考答案：A
