．—Do you think_____     worthwhile to go all the way to Los Angles to buy that computer?
—Well ,I’m going to visit some relatives, too.  
A．itB．/C．thisD．that
A
在本句中，it為形式賓語(yǔ)，代替下文的to go all the way to Los Angles to buy that computer。而其他選項(xiàng)不能作形式賓語(yǔ)。
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