【C11】A．whatB．whichC．thatD．one

A．whatB．whichC．thatD．since

【29】A．whatB．whichC．thatD．if

Twelve is to three ______ four is to one.[1998]A．whatB．asC．thatD．like

There are many animals, however, ____ never play.A: whatB: whichC: thatD: where

【C3】A．whatB．to whichC．in thatD．where

【C7】A．whatB．whichC．thatD．as