Fill in the gaps with the correct forms:
1. I (have been learning) ... English for seven years now.
2. But last year I (was not working) ... hard enough, that's why my marks (were not) ... really good then
3. As I (want to pass) my English exam successfully next year, I (am studying) ... harder this term.
4. During my last summer holidays, my parents (sent) ... me on a language course to London.
5. It (was) great and I think ... I (had learnt)... a lot.
6. Before I (went) to London, I (did not enjoy)... learning English.