I love to eat pineapples. They are sweet and sour at the same time. So they are very delicious.

I love to eat pineapples. They are sweet and sour at the same time and so, they are very delicious.

I love to eat pineapples. They are sweet and sour at the same time. So they very delicious.

I love to eat pineapple. [They are] It is sweet and sour at the same time so [they] it is very delicious. Because a pineapple is a relatively large fruit and you are unlikely to eat a whole one at a time, we would use the singular ' . . eat pineapple'. Other smaller fruits, which you might eat one or more of, are plural e.g. I like to eat apples, plums, strawberries, etc.

Hello Nice to meet you. I am very happy to keep with you. Could we talk in English on Skype?