Artificial Language - General Questions

'tara nul' means 'fresh milk', 'nul seko' means 'milk shop' and 'seko pim' means 'shop open'. What is the code for 'open'?

In a code, 'zoko mira' means 'small fish', 'mira dua' means 'fish tank' and 'dua pel' means 'tank top'. Which word means 'top'?

'gari bon' means 'river bank', 'bon tul' means 'bank account' and 'tul pesa' means 'account number'. Which word means 'river'?

In a code, 'ko pa ri' means 'cats drink milk', 'ri lo ko' means 'milk and cats' and 'pa nu' means 'drink water'. What is the code for 'and'?

'sel ka tu' means 'sun is bright', 'tu mon sel' means 'bright and sun' and 'ka dri' means 'is hot'. Which word means 'hot'?