Поправить оплошности в предложениях:1. She must to be exhausted after working

Поправить оплошности в предложениях:

1. She must to be exhausted after working a lot.
2. Ive anxious Mary to prepare for the lecture.
3. You better making an appointment to see the dentist.
4. It had rained while they were going home.
5. She helped to me writing an essay.