TESTFOUR 18. I didn’t know what to do but then an idea suddenly to me.

问题描述:

TESTFOUR 18. I didn’t know what to do but then an idea suddenly to me.
TESTFOUR
18. I didn’t know what to do but then an idea suddenly to me.
A)happened
B)entered
C)occurred
D)bit
请问答案为什么选C,请帮我详细的解答,谢谢~

就c选项是想起的意思别的不符合句意