Which sentence uses commas correctly?

the tornado drill, i believe is held, so that we will know what to do in case of severe weather.

the tornado drill, i believe, is held so that we will know what to do, in case of severe weather.

the tornado drill, i believe is held so that we will know what to do in case of severe weather.

the tornado drill, i believe, is held so that we will know what to do in case of severe weather.

gradpoint- The tornado drill, I believe is held so that we will know what to do in case of severe weather.

question:

it's when i'm weary of considerations, and life is too much like a pathless wood where your face burns and tickles with the cobwebs broken across it, and one eye is weeping from a twig's having lashed across it open

answer to question #1: the simile that occurs in the text given (lines 43-47) is: ''life is too much like a pathless ''

explanation: a simile is a comparison of one thing with another thing and it is used to make a vivid description. it uses like or as. in the text, we can understand that the person is feeling weary of considerations and because of this, the person compares ''life'' to ''a pathless wood''.

answer to question #2: in this text we can understand that the word frost could mean anger, annoyance and bitterness, due to the fact that the person is stating that he/she is feeling weary of considerations and compares life to a pathless wood.

explanation: the word frost means coldness and something covered by ice crystals but looking at the comparison made in this text, we can understand that the word frost could mean anger, annoyance and bitterness, due to the fact that the person is stating that he/she is feeling weary of considerations therefore he/she compares life to a pathless wood.

the present continuous is a verb tense which is mainly used to indicates that an action is in progress at the moment of speaking.  

it is formed using: person + verb to be (am/is/are) +verb + - ing form  

example: i am studying at this moment .

in addition, the present continuous is also used in order to express things that will or will not happen in the near future.

example: i am having dinner with some friends tonight.

the speaker sometimes   uses it   to express that an action is repeated and it causes irritation on the part of the speaker

example: my sister is constantly complaining about everything.