一道疑惑的语法题

redli

A majority of people in the united States can get all the calcium their bodies[/U]from the food they eat.
A)require  B)requires  C)requiring   D)to require
答案选A，解释是“缺少谓语”，这个解释我比较疑惑，此题的谓语不是“get”吗？而且require前没有任何从句引导词，所以我选C。
请帮忙想想，谢谢！

oddyuibe

A majority of people in the united States can get all the calcium (that) their bodies require from the food they eat.

定于从句，省略了that. require作their bodies的谓语

这是我的理解

lisaislisa

agree with oddyuibe :
if C
A majority of people in the united States can get all the calcium (that) their bodies [which is requiring ] from the food they eat.
that's not correct .

but I aslo fail to follow '解释是“缺少谓语”，' thtt's rediculous [em07][em07][em07]