Excuse me, Where is our English teacher—Look, she is on the playground ________an yellow scarf today.

Kate’s dad is getting old. She will go back home to see him_______it is convenient.

_________ volunteers will give out leafletsto ask people to protect the wetlands.

She had wanted to go to the west part of China in search of better view. But she turned ___voluntary teacher there.

_______ in a long queue, we waited for the store to open to buy a NewiPad.