They will start their project ____at helping the poor children to be educated in China's west.
The two friends ______ on line for three hours, and they will go on.
----Why does Jane always ask you for help? ---- There is no one else ________, is there?
Tuhao, dating back perhaps as far as the Southern Dynasty, _________ its new meaning last September.
Some young people these days, especially the homebodies, just _____go out of their homes to experience the real world.
The little girl is walking along the beach, happy and joyful, _____bending down to pick up a beautiful seashell.