in a heavy rain，Robert fell ill and couldn’t help but for a leave.
A. Caught; to ask
B. Catching; ask
C. Catching; to ask
D. Caught; ask
网友回答
A. Caught; to ask
B. Catching; ask
C. Catching; to ask
(答案→)D. Caught; ask
解析：考察固定搭配。固定搭配Be caught in…遭遇…；其中的caught已经转换成形容词；第二空couldn’t help but do sth不得不做某事；要注意和can’t help doing情不自禁做某事；区别开来，句意：遇见了暴雨，Robert生病了，不得不请假。根据句意说明D正确。