If our whole society keeps trying, we ________our sky blue again.
A.making B.will make C.make D.made
No one can learn English well ________ he works hard on it.
A.if B.unless C.though D.while
It's not proper to make a big decision ________ having a discussion with your parents.
A.among B.towards C.without D.from
With confidence, we can ________ overcome the difficulties we face.
A.certainly B.carelessly C.generally D.slowly
You should ________ to this invitation immediately whether you will go to the party or not.
A.invent B.answer C.reply D.appear
She has no time to go to the park, because she has to prepare for the coming ________．
A.exam B.duty C.part D.note
