Question

when we use this...

1. Must
2. might

Answer 1

1) Rohan must have left the water running
2) it might have done damage inside
these are the examples

Answer 2

Hi there,

We use "Must" for very necessarily thing that something happens.

example : We Must not play with corrosion acids.

We use "might" for saying possibility of happening/happened .

Example:

where is vivek ?

: he might be upstairs.