Question

We must work hard or face failure
Pick out the modal and state its function

Answer 1

must - may

The modal verb may is used to ask, grant, or describe permission; to politely offer to do something for someone; to express the possibility of something happening or occurring; or to express a wish or desire that something will be the case in the future.

Answer 2

$\: \huge \mathfrak\purple{answer:-}$

must - may

The modal verb may is used to ask, grant, or describe permission; to politely offer to do something for someone; to express the possibility of something happening or occurring; or to express a wish or desire that something will be the case in the future.

$\: \huge \mathfrak{hope \: it \: helps..}$