Find and correct the mistakes in the sentences. One sentence does not have a mistake.
1 I do go to the local college.
2 Do you coming with us today?
3 We don’t often chat online.
4 Your dinner is on the table. It gets cold.
5 He always doesn’t wait for me after class.
6 Why does he sit over there? Ask him to join us.
7 This work is geting quite difficult.