[单选题]Martin: Can you cover for me on Sunday? I'm supposed to teach the high school class. Lisa: Sure. ______ ? Martin: We're going to the beach for the weekend. Lisa: Well, don't worry. I'll take good care of Sunday school.

正确答案 ：C

What's up

解析：解析：对话中，Lisa同意帮Martin的忙，接下来Martin解释说要去海滩度周末。可见 Lisa在前面可能问他去做何事。C．What's up? 在口语中常用来表示“你怎么了?”“有什么事?”符合题意。

[单选题]According to the passage, the first settlers used wood for their utensils and tools because it was ______.

正确答案 ：C

available

解析：解析：注意题干上的信号词utensils and tools，以此为目标可以很容易地找到本题的依据句“Because of the lack of other materials，early settlers were forced to make tools and utensils out of wood.”选择C的原因在于当时十分缺乏其他材料而木材到处都有所以得到采用。available意思为“有，存在”。

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