I have got diarrhoea.

We have had bad weather for days [now]

to have the patience of Job

Have a go at it

to have a foot in both camps

to have a will of one’s own

to have nerves of steel

I have an appetite for sex

Have a try

to have the potential to do something

I have an appetite for cake with cream.

to have made a mess in one’s pants

to have trust in his words

Have you anything for sunburn?

to have a foul mouth

to have a word with someone

to have news for someone

I have no idea what you mean.

to have a lot in common

to have a sore throat

to have a yank

to have the power to act

to have strong feelings about ...

to have a wet dream

to have a frog in one’s throat