问题补充:
It is Tom often surfs the Internet playing games makes his parents very angry.
A. 不填; that
B. what; that
C. that; that
D. that; what
答案:
A. 不填; that
B. what; that
(答案→)C. that; that
D. that; what
解析:考查名词性从句及强调句。第一个 that引导主语从句,从句不缺少成分,第二个that引导强调句,强调主语that Tom often surfs the Internet playing games,故选C。