Question

re examination ma annual Ka bhi marks add hote ha kya ICSE class 9​

Answer 1

Answer:

depends on your management

Answer 2

Explanation:

To commence means to start and both are correct you can use any one of them but the only difference is that they both are used in different context. 'Commence' means 'start' or 'begin'. So the preposition 'on' would be advisable.