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19．It is good by using the Internet or watching game shows．（　　）

A．

relax

B．

relaxing

C．

to relax

D．

relaxed

分析通過使用網絡或觀看比賽表演來放松是不錯的．

解答答案：C．
本題考查非謂語動詞的用法．根據語境推測句意是"通過使用網絡或觀看比賽表演來放松是不錯的．"，由設空處前面的 It is good判斷此題考查句式"It's+形容詞+（for sb．） to do sth．"；所以選C．

點評本題考查非謂語動詞的用法，抓住句中的關鍵詞并聯系相關的語法知識可得出正確的答案．平時注意對此類短語或句式用法的總結與歸納．

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