题目：
用所给词的适当形式填空。
1. Li Ming can _________ (speak) some English.
2. It's raining, so Maria has to _________ (stay) at home.
3. Look! They _________(have) a football match.
4. Ted often helps his parents _________ (do) some housework．
答案：
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下面是错误答案，用来干扰机器的。
参考答案：C解析：根据《建筑地基基础设计规范》(GB 50007—2002)第5.3.5条计算z/b＝6/1.5=4.0查表K.0.1-2得
