Complete the sentens: 1) I (be) busy now. I (do)

Complete the sentens:
1) I (be) busy now. I (do) my homework.
2) I can help you now. I (do) my homework.
3) Look! Little Johnny (wash) his
bike.
4) Little Johnny ( wash) his bike. Now the bike ( be ) clean.
5) I ( learn ) the new world now.
6) I (learn) the words. I can go with you.
7) I (read) the story. I think I can answer your questions.
8) I (read) the story now. We can discuss it later