【C12】A．whenB．whateverC．whereD．how

【C14】A．whenB．whoseC．whereD．which

【C19】A．whenB．whichC．whoD．where

【C12】A．whenB．thoughC．untilD．for

【C9】A．whenB．asC．whereD．that

【C7】A．whenB．whichC．whereD．that

A．whenB．whileC．whichD．where