I'm sure that there____more trees in our country in the future.
A.have B.are C.will have D.will be
—Mike,you________play the piano well if you don't work hard.
—I know,Mom.
A.don't B.won't C.doesn't D.didn't
You will________take a holiday after the exams.
A.can B.could C.be able to D.are able to
.Could you please pass me two ________?
A.pieces paper B.piece paper
C.pieces of paper D.pieces of papers
Everyone should play a part_____the earth.
A.to save B.saved
C.for saving D.in saving
Please check your paper to ________ there are no mistakes.
A.think of B.try out C.find out D.make sure