31. In the past few years, research has suggested that Vitamin D may increase the level of serotonin(血清素), one of the key neurotransmitters influencing our mood, and ________it helps to relieve mood disorders.
Mrs. Taylor has ________8-year-old daughter who has _____gift for painting 。She has won two national prizes.
There are two small rooms in the beach house, _________ serves as a kitchen.
Finding her car stolen, _________ .
_____ in an atmosphere of simple living was what her parents wished for.
What surprised me most was not what he said but _________he said it.