[单选题]He was in a hurry and left things in a real ______.

正确答案 ：C

mess

解析：解析：in a mess意为“处于混乱之中”；mixture意为“混合，混合物”；mass意为“一块”；confusion意为“混乱，混淆”。

[单选题]Maggie ran back to the kitchen, eggs ______ carefully in her hands.

正确答案 ：B

held

解析：解析：该句为独立主格结构，后半部分是eggs being held 的省略形式。

[单选题]All the firemen in the city were ______to fight against the big fire.

正确答案 ：C

called up

解析：解析：called in意为“回收”；called off意为“取消”；called up 意为“召集，打电话，使人想起”；called on意为“访问(某人)”。

[单选题]How many tablets should one take before he goes to sleep?

正确答案 ：B

two

解析：解析：本题的依据句为“For maximum nighttime and early morning relief，take two tablets at bedtime.”B选项可以得到确认。

[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。

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