Translate the Polish fragments of the sentences into English.

1 I (muszę pamiętać) to call my sister and talk to her.
2 You (nie wolno ci jeździć rowerem) on a motorway.
3 He (powinien uczyć się) Spanish as he's going to study in Spain.
4 (Czy muszę kupić bilet) to watch this art exhibition?
5 (Nie musisz przychodzić) to this class. It's optional.
6 (Czy mogę skorzystać z) wi-fi here? What's the password?