Question

main clause and subordinate clause
• You must not leave till you are told to do so.
•I met the man who draw this picture.
•He came to enquire if his brother was with us.
•It is a miracle that he has not drowned.
•The moment which is lost, is lost forever​

Answer 1

1. You must not leave-main clause

till you are told to do so - subordinate clause

2. I met the man- main clause

who draw this picture- subordinate clause

3. He came to enquire- main clause

if his brother was with us -subordinate clause

4. It is a miracle- main clause

that he has not drowned -subordinate clause