英语改错题,请帮忙修改,

英语改错题,请帮忙修改,
46.A container weighs more after air is put in,it proves that air has weight.
A B C D
47.The young man,to make several attempts to beat the world record
A B
in high jumping,decided to have another try.
C D
48.Of the two coats,I'd choose the cheapest one to spare some
A B C
money for a book.
D
49.The protection of our environment is not nothing to be left to the
A B C
government.Everyone should be concerned.
D
50.There are moments in life where you miss someone so much that
A B C
you just want to pick them up from dreams and hug them for real.
D
51.None of us had the final say in this matter,and therefore it was
A B C
recommended that we waited for the authorities.
D
52.After her two-week vacation was over,Dorothy regretted to spend
A B C
so much money for so little pleasure.
D
53.Don't make Helen's remarks too seriously.She is so upset that I
A B C
don't think she really knows what she is saying.
D
54.Workers newly arrive from the south or rural areas perform their job
A B
differently from those from other sections of the city.
C D
55.While remembered mainly for the invention of the telephone,
A B C
Alexander Graham Bell devoted his life to help the deaf.
D