What is your answer? A drill is a classroom technique used to practise.

ِA drill is a technique which has been already used for a long time in teaching foreign languages; it is a relevant way to facilitate the rules of Grammar Study, New Vocabulary Study and New Language study. In my opinion, it is an effective means to explain a variety of idioms and expressions. Using "drill" in classrooms gives students a good opportunity to learn coherently and cohesively without feeling bored or frustrated.

(1)New language

A substitution drill is a classroom technique used to practice new language.

i know nothing about it  really 

 Drilling ,a technique that has been used in foreign language classrooms for many years. It was a key feature of audio lingual approaches to language teaching which placed emphasis on repeating structural patterns through oral practice.

• Based on the Behaviourist view that learning to speak a foreign language - like other skills - was simply a question of correct habit formation, it was thought that repeating phrases correctly lots of times would lead to mastery of the language.

• Nowadays we know that language learning is not like this - it is a far more complex and creative process - and language is a lot more than just a list of structures to be memorised.

An approach based mainly or only on language drills is unlikely to find many adherents today. However, drilling remains a useful technique in the classroom if it is used appropriately.

IT IS Description of Lesson in which Drill and practice is a behaviorist aligned technique in which students are given the same materials repeatedly until mastery is achieved. In each iteration, students are given similar questions to answer or activities to perform, with a certain percentage of correct responses or actions moving the student to the next level of difficulty.

SO ALL CHOICES YOU PUT IN YOUR QUESTION DOESN'T FIT IN THE ANSWER.