单项选择题
I thought things would get better, but（）it is they are getting worse.
A.as B.like C.for D.since
单项选择题 The encouragement of competition in all possible fields should tend to（）the likelihood of war rather than increase it.
单项选择题 I began（）through the pages of a gardening catalogue.
单项选择题 Many grandchildren form a close（）to their grandparents.
