(2013·高考安徽卷)From space，the earth looks blue.This is ________ about seventyone percent of its surface is covered by water.
A．why B．how
C．because D．whether
(2013·高考湖南卷)Do not let any failures discourage you，for you can never tell________close you may be to victory.
A．how B．that
C．which D．where
(2013·高考山东卷)It’s good to know ________ the dogs will be well cared for while we’re away.
A．what B．whose
C．which D．that
(2013·高考重庆卷)______ __struck me most in the movie was the father’s deep love for his son.
A．That B．It
C．What D．Which
(2013·高考天津卷)________ I want to tell you is the deep love and respect I have for my parents.
A．That B．Which
C．Whether D．What
(2013·高考北京卷)Experts believe________people can waste less food by shopping only when it is necessary.
A．why B．where
C．that D．what
