Comparedwith2milliontonslastyear,ourcoaloutputhasincreasedthreetimes;thatistosay,ourcoaloutputhasincreased8milliontonsthisyear.A.to;toB.to;byC.by;byD.by;to

Question

Compared with 2 million tons last year, our coal output has increased _____three times; that is to say, our coal output has increased_____8 million tonsthis year.
A.to; to
B.to; by
C.by; by
D.by; to

Answer 1

D