—Are you coming to Jeff's party?
—I'm not sure.I ________ go to the concert instead.
A.must | B.would | C.should | D.might |
Maybe you have been to many countries, but nowhere else _______ a more beautiful palace.
A.can you find | B.you could find | C.you can find | D.could you find |
This problem may lead to more serious ones if_______ unsolved.
A.making | B.left | C.remained | D.keeping |
________, you need to give all you have and try your best.
A.Being a winner | B.To be a winner |
C.Be a winner | D.Having been a winner |
Many human activities also _______carbon gases, which will result in global warming.
A.put off | B.send off | C.let off | D.set off |
Take good care of the resources or they will be ______ soon.
A.run out | B.used up | C.run away | D.using up |