If the teacher catches a cold and the parents are warm-hearted.

You can express your condolences in this way:

1. Teacher, I heard that you have a cold and I am really worried about your health. Please have a good rest and don't force yourself. We believe that you will recover soon.

2. Dear teacher, catching a cold must be very uncomfortable, but please believe in the support and care of our parents. You have worked hard to teach our children, and now it is time for us to take care of you. I hope you can recover as soon as possible, and we will pray for you.

3. Dear teacher, I am really distressed to hear that you are ill. You have always been an example and guide for our children, and now it is time for us to repay you. Please rest assured, we will try our best to take care of the children, and look forward to your early recovery and return to class to continue teaching them.