Нужно, и use the proper form or the pronouns: 1. will you do it yourself? -yes, as i always do the 2.she didn't want to make that 3.jeremy draw a very nice picture last sunday and did that 4. yesterday little kathy said the word 'mummy' for the first time 5. they didn't know what to do in this situation they were waiting for the master's help 6. my brother is very good at cooking he can cook an apple 7. the patient was so weak that she couldn't walk 8. we won't finish the work by monday by we need some more people to help.