The antonyms are Confidently, nice, and mock.
Meaning: Sitcom is short for “situation comedy.”
Example: Sitcom work requires a lot of retakes.
Well I can answer what the word beast suggests about the text.
I think it is suggests that they don't know much about the people of Mars, the life forms that lived there so they are frightened of them. They know that they are intelligent, or were, but also acknowledge how the planet is nearly impossible to sustain life with all of its water frozen.
Hope that helped, I don't know much about English class in highschool yet so I wasn't sure exactly how to answer the question.
At age 16, you can finally graduate up to having a provisional license if you have displayed good driving behavior, completed 30 hours of behind-the-wheel instruction, had your permit for at least six months, and passed the driving test. A provisional license will allow you to finally drive by yourself. However, you still can’t drive between midnight and 5 a.m., you can’t drive with more than one passenger under 21 years old, and you cannot use a cell phone (even with a headset) except in the event of an emergency. These restrictions will be lifted after one year of good driving on your provisional license, or when you turn 18.