It is duty to protect the environment.( )
we
us
ours
our
﹣﹣﹣How wonderful the school concert is!I wonder________ our school will hold it next year.
﹣﹣﹣Sure.It's our school tradition!( )
A.howB.ifC.where
Zhang Hong,a Chinese,is the first Asian blind climber_________ has reached the top of Qomolangma.( )
A.whoB.whoseC.which
The Party's 100th birthday ____________ on July 1st this year in our country.( )
A.will be celebratedB.has been celebrated
C.will celebrate
Life__________ be easy or difficult,sometimes it depends on how you look at it.( )
A.can'tB.mustC.can
Everyone needs to know __________ importance of rubbish sorting(分类).( )
A.anB.不填C.the