Which sentences follow correct conventions for

English usage? Select the two correct answers.
I don’t think it’s that hard to read a whole book in
one week if it’s a good book.
The tortoise moved its body at a tedious pace,
lifting its short legs slowly.
Its a meeting that will be held on Saturday, and
Carol and Ava will be its leaders.
Mary goes to the frozen lake and skates on it’s
surface until it’s dark almost every day.
If its an art class, Steven is definitely going to try
to get his name on its waiting list.

I don’t think it’s that hard to read a whole book in one week if it’s a good book.

The tortoise moved its body at a tedious pace, lifting its short legs slowly.