Choose the correct negative sentence in present perfect.

His mother has so far not made dinner.
His mother has not made dinner so far.
His mother have not made dinner so far.

They have not learned the formulas, so they will probably fail the test.
They has not learned the formulas, so they will probably fail the test.
They have not learn the formulas, so they will probably fail the test.

The movie "Harry Potter and Sorcerers stone" is the first one in the big cycle of whole story about Harry. He is a very young boy here, 11 years old. This movie opens for us his wonderful world. White and black magic, kind and evil people. Here we can see for the first time his school. I like it so much! I guess creators of the movie got a very big pleasure during the making all this magic. I'd like to know how they did make dresses, things and interiors for the recording film. I know they made a lot of shots with a special green background and later computer specialists did draw beautiful buildings and landscapes. I believe this movie makes us inspirited.

Мама - это такое особенное слово
Самое прекрасное , которое я до сих пор слышал
Эти слова для тебя, больше всех других.
Мама - ты такая особенная 
Ты просто самая лучшая на свете. 

Mom is such a special word
The loveliest I`ve ever heard
These words to you; above all rest
Mom; you`re so special.
You`re simply the best

Мне хотелось бы написать, чтобы рифм был, вот что получилось вкратце:
Мама - это особенное слово
Она ближе всех, мой любимый человек
Мама ради меня на все готова
И любовь ко мне она хранит навек