English diary(please help me correct it if there are mistakes)

Today is Monday. I'm very glad to see my diary was being altered/corrected by many native speakers. This gives me the motive force to continue my writing. In today's coversation class, our teacher Miss Zhang played a game with us.The whole class was divided into six teams, each team must choose one person to describe the words that teacher would give while the rest of us should try to guess it. Once you answer a word correctly, you will gain 10 points. The winner will be the team that will achieved the highest marks. I find it's hard to guess the words but other teams are very good at it. For example,the word 'seal', one of my classmates described that 'It is an animal living in the sea and it can also be used as a noun that you used to stamp on a document to show it is your own mark.' At last our team got the least score. I think it's largely atrributed to the shortage of our vocabulary. I believe it's necessary to recite vocabulary everyday.
After the class, our monitor asked us to stay for a little while, for we need to choose this term's 'three good's students'. Everyone must use a piece of paper to write the name of the person that they think will fit this honour. I feel so happy that I was chosen to be the 'three good's students'. I will continue to work hard.

Wow, congrats. Keep it up. And work hard. :)