【C10】A．whatB．whichC．whereD．how

A．WhatB．WhichC．ItD．They

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

【C10】A．thatB．whichC．whatD．how