Learn Romanian: Fructul este foarte gustos.

In Romanian, the word for "the" (the definite article) attaches to the end of the noun instead of being a separate word before it. The base word for "fruit" is fruct, and adding -ul makes it fructul ("the fruit").

Why do we use gustos instead of the feminine form gustoasă?

Fruct is a neuter noun in Romanian. This means it acts like a masculine noun when there is only one (singular), and like a feminine noun when there are multiple (plural). Because this sentence is about a single fruit, the adjective gustos takes the masculine singular form.

How would this sentence change if I wanted to say "The fruits are very tasty"?

It would become Fructele sunt foarte gustoase. Notice how the plural noun fructele now takes the feminine plural adjective gustoase, and the verb changes to sunt ("are").

Does the word foarte always go right before the adjective?

Yes, just like in English, the word foarte ("very") goes directly in front of the adjective or adverb it is describing. You would not say Fructul este gustos foarte.