根据句意用适当的连词填空。 1. I don't know _________ to stay or to go. 2. Go along this street, _________ you'll find the supermarket at the end of it. 3. Do _________ the Romans do when in Rome. 4. Jenny is a lazy girl, _________ she always gets good marks. 5. She can _________ stay at home ________ go out to play. 6. My mother didn't go to bed _________ she finished making the birthday cake for me. 7. Mr Wang speaks _________ clearly _________ everyone can hear him. 8. The swimming pool won't be open _________ the workers are clearing it. 9. Lily is _________ an American ________ a German. She is an English girl. 10. _________ Tom is young, he knows a lot about computers. 11. Let's hurry, _________ we'll be late.