I. 选用方框内合适的单词并用其正确形式填空（每个单词限用一次）。
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nail, suspend, appoint, salary, guilty
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1. I still feel ________ about things I said to my mother when I was a teenager.
2. Once the notice was ________ up on the wall, the astronaut went to check what happened.
3. There is no switch in the room. The lamp ________ from the ceiling is controlled by AI technology.
4. As a writer of science fiction, he doesn’t earn a monthly ________, whereas his effort has been rewarded with success.
5. When writing a request letter for a(n) ________ with the chairman of the Robotic Expert Committee, explain why you are requesting this meeting.
