...

明日試験がありますか。うん、あります。 Ashita shiken ga arimasu ka. Un, arimasu. ‘Is there is test tomorrow? Yes, there is.’

お金もあります。 O-kane mo arimasu. 'There is/(S)He has money as well.'

Vocab

予約 yoyaku 'reservation'

...

うん un ‘yes (casual, usually male use)’

お金 o-kane 'money'

Notes

あります basically means 'there is/are' or 'sometimes (someone) has'. It may only be used with inanimate things, so not people or animals.