Mary looks down today. What is up?—Well，________happened between Mary and me is none of your business.

Evidence has been found through years ofstudy______children’s early sleeping problems are likely to continue when theygrow up.

o us all in China, _______ experience of taking the college entrance examination seems an important way to judge whether one’s life is ______ complete one.

No more of this fancy playing with words—Iwant some ______ talk here.

Toby will not be in London next Tuesday. He _____ in the Himalayas. [ ]