Составить 12 предложения с глаголом to do

1.       I do my duty

2.       We do our homework

3.       I do know him.

4.       I’m doing my exam in a few weeks.

5.       He does know how to play piano.

6.       I need to do my homework now.

7.       My friend does his best to win in the competition

8.       I did lock the door

9.       He does understand you.

10.   Do you do exercises every day?

11.   My mum likes to do shopping, but I don't

12.   Do you know her? She is my big sister

13.   Doing nothing seems to be her hobby.

14.   May I help you to do the accounts?