It's reported that a big earthquake (hit) Indonesia on May 27.

It's reported that a big earthquake_____(hit) Indonesia on May 27.
答案是hit，可是为什么不加s呢？

Will you be a volunteer when the 2008 Olympic Games ______ (hold) in beijing?
答案是are held ,为什么不是单数呢？

---

It's reported that a big earthquake_____(hit) Indonesia on May 27.
过去时
地震发生做宴散在过去
hit过去时过去分词都是【hit】
Will you be a volunteer when the 2008 Olympic Games ______ (hold) in beijing?
【Olympic Games】奥运会看成是复数名词，中心词是【纯氏games】，所以用祥虚are held
有不会的可以再问我

---