Did you see Mary and her sister this morning?– Yes, I saw _________ girls playing in the playground.

The newly built school canteen(餐厅) is big enough to hold two ________ students at lunch time.

Remember this: ________ careful you are, ________ mistakes you will make.— We know, Miss Gao.

______ earth we live on is bigger than ______ moon.

Li Na, a word-famous tennis player from Wuhan, never _______her dream, She has just set a new record in the 2011French Open.