A.costlier
B.expensiver
C.cost more
D.more costly

A.take the advantage
B.take advantage
C.take an advantage
D.have advantage

A.expanded
B.expands
C.expand
D.expanding

A.driven
B.drives
C.driving
D.drove

A.measure
B.rate
C.increase
D.progress

A.can buy
B.will buy
C.is bought
D.can be bought

A.one
B.this
C.those
D.that

A.pollution
B.pollutant
C.pollute
D.polluting

A.the best
B.better
C.more
D.the better

A.It’s on the 18th of March
B.I don’t know how to celebrate it
C.It’s not easy tor emember it
D.I was born in a small village

A.Sorry,Ican’t remember her
B.I never think of him
C.It’s hard to say,actually
D.No,I don’t believe it