44.on改成in
45.fifty后面加上people
46.should改成would
47.chose改成choose
48.recommendations改成recommendation
49.had后面加上a
50.showed改成showing
51.去掉immediately
52.the改成an
53.came后面加上in
54.正确
44.on改成in
45.fifty后面加上people
46.should改成would
47.chose改成choose
48.recommendations改成recommendation
49.had后面加上a
50.showed改成showing
51.去掉immediately
52.the改成an
53.came后面加上in
54.正确