【C3】A．whatB．to whichC．in thatD．where

A．whatB．whichC．thatD．since

A．whatB．at whichC．whereD．in which

【29】A．whatB．whichC．thatD．if

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

【C3】A．whatB．whenC．thatD．where

【C7】A．whatB．whichC．thatD．as