She was looking for her three nephews , but they were nowhere ______ ,which made her worried .
Evdence has been found through years of study______ children’s early sleeping problem likely to continue when they grow up.
Everyone in the village is very friendly. It doesn't matter ____ you have lived there for a short or a long time.
(2012江西卷)It suddenly occurred to him he had left his keys in the office.
As many five courses are provided, and you are free to choose ______ suits you best.
Scientists study ____ human brains work to make computers.