Study the sentences below about Modern Foreign Languages.

1. The school-based teaching of Foreign Languages enables students to understand and produce sentences in a foreign language, and allow them to develop speaking competence.
2. Foreign Languages at the average school are almost entirely based on the study of grammatical formulae; the memorization of rules and a priority focus on written language.
3. Foreign Languages are now part of a field of knowledge, and no longer an isolated course in the curriculum.
4. Teaching a foreign language provides communication and allows students to have access to some kinds of information while contributing to their overall development as adults.

Choose the alternative which contains the correct sentences.