Question

Preseverance is a kind of quality and that's ________ it takes to do anything well. (NMET 2000)

1. A.
   what
2. B.
   that
3. C.
   which
4. D.
   why

Answer 1

A
what it takes to do anything well作that's后表语从句，It takes…to do…意思为“花费……做某事”，故用疑问词what作take的宾语．