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【简答题】
基本语法。
1. I haven't heard from him ______ he went to America.
2. He won't be here______he is invited.
3. He will not go to the cinema ______he is very busy.
4. We found the key ______she had left it.
5. We found the books two days ______he had gone away.
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题目标签：语法
参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】在搜索引擎中，site的语法作用是（）
A.
限制检索结果的来源
B.
限制检索结果的文件类型
C.
限制检索词出现的位置
D.
与空格的作用类似，连接两个检索条件，表示两个条件都必须满足