Question

A sharp sword was found buried together with the royal carpenter, which was believed _____himself________against grave robbers.

1. A.
   used to defend
2. B.
   being used to defend
3. C.
   to be used to defending
4. D.
   to be used to defend

Answer 1

D
第一空考查句型：Sb/sth is believed to do…,所以只能在C、D里面选择，第二空填to defend表示目的状语。选D。