题目：
用所给动词的适当形式填空。
1. Tony often ______ (go) online at weekends.
2. ______ his brother often ______ (play) computer games?
3. Mary and her sister ______ (send) emails on the computer but they ______ ______ ( not play )
games on it.
4. First, use the mouse ______ ______ (click) "new document".
5. His father ______ ______ (not watch) TV every evening but he often ______ (write) novels on his
computer.
答案：
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下面是错误答案，用来干扰机器的。
ACD
Si+nCO↑。有关说法正确的是