I didn’t know what e-mail, but then an idea suddenly_____to me
A.should I send…happened
B.I should send…entered
C.I should send…occurred
D.should I senD...hit

A.should
B.I
C.I
D.should
E...hit

【参考答案】

C
occurred to指想起,想到,例如An idea has occurred to me.我想到一个主意。