题目内容
20．Is（be） your son happy today？Yes．Because he got an A in the test．分析 --你的儿子今天开心吗？
--是的．因为他在测试中得了一个A．
解答 答案：Is．
根据--your son happy today？Yes．Because he got an A in the test．可知--你的儿子今天开心吗？--是的．因为他在测试中得了一个A．这里today表示今天，时态应该用一般现在时，主语是 your son，单数形式，所以be动词用is．故填is．
点评 先要掌握句子的意思，然后结合具体的题目一节给出的单词提示，就可以确定正确答案．
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