The park was full of people，________ themselves in the sunshine.

You can arrive in Guangzhou on time for the fashion show ____ you don’t mind taking the night train.

Last Sunday I climbed to the top of the hill near my home, 　　　I could see half of the city.

Ｉdidn’tgo to bed _______ I finish my homework.

Helen had to shout ________above the sound of the music.