皮皮学，免费搜题
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【单选题】
在层级式组织中,上层包括A.
科学家
B.
高层管理人员
C.
专业人员
D.
数据工作者
E.
知识工作者
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】----- You shouldn’t have talked back to our teacher like that. It was awfully impolite. ----- You are right. I _________ crazy at that moment.
A.
could have been
B.
can be
C.
must have been
D.
should have been
【单选题】— You shouldn't have talked back to our teacher like that. It was awfully impolite. — You are right. I ______ crazy at that moment. [ ]
A.
must be
B.
could have been
C.
must have been
D.
should have been.
【单选题】Do you often use a computer _____ your homework? [ ]
A.
write
B.
writes
C.
to write
D.
writing
【单选题】"You look awfully exhausted." "Yes, I non-stop until two o'clock in the morning."
A.
have been working
B.
worked
C.
was working
D.
have worked
【单选题】---You _________to our Mom like that. It was awfully impolite. ---You are right. I must have been crazy at that moment.
A.
mustn’t have talked
B.
needn’t have talked
C.
shouldn’t have talked
D.
may not have talked
【简答题】所有的Main方法都必须是 的。
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