C 把years改成 year
C at 改成 on
C shake 改成shook
C spilling 改成spilt
C will改成won't
B I have heard 改成 have i heard
D too 改成 either
A looking改成looked
D hand 改成be handed
C when 改成than
B meet 改成 meeting
D such 改成such a
B left改为leaving
B would take 改成would have taken
A have改成has
A will not do改成wouldn't have done
C to去掉
B work on 前面加上to
D same 前面加上the
码字不易,