Answer:
Marilla grows anxious.
Explanation:
Here in the story: "Thereupon Anne held her tongue so obediently and thoroughly that her continued silence made Marilla rather nervous, as if in the presence of something not exactly natural.", shows that Marilla grows nervous when Anne didn't talk.
A seven letter word containing thousands of letters - a mailbox.
The word mailbox has 7 letters, and it contains thousands of letters - just not the letters from the alphabet, but rather a form of a paper message.
Cross of the fabric of edge if the fabric that parallizes
I think this is based on your opinion rather than facts so you can use what you know to give your OWN opinion シ