Question

All that can be eaten _______ eaten up.

A. are being 　　 B. has been　　 C. had been 　　　 D. have been

 

Answer 1

B

本句话中，主句的主语是all,为抽象概念。因此，其谓语应用单数的has been。关系代词that引导定语从句，并在从句中作主语。