问题
选择题
A good idea _________ to him, and he knew _______ to do next.
A．happened , what
B．appeared ,how
C．occurred ,what
D．arrived ,how
答案
答案：C
happen多表示某事件突然发生,appear出现,occur,突然出现某种灵感,arrive到达,根据题意选C,他突然想起一个好主意,知道了接下来做什么.