题目内容
There is a smile on Sam’ s face. He must be ______ that his answer is right.
—I think so. No one did as _______as him in our class.
A. certain; good B. certain; well C. uncertain; good D. uncertain; well
B 【解析】句意:Sam的脸上带着微笑,他一定很确信他的回答是正确的。-我想是这样的。在我们班没有人能像他那样好。certain确定的;uncertain不确定的;good好的,形容词;well好,副词。根据句意There is a smile on Sam's face可知,Sam对答案很确定,故先排除C和D。第二个空是来修饰动词did的,应用副词,故选B。
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