1.you must improve your spelling
a.make something better
b.become better
c.make something worse
d.become worse
2.I got a grade 2 ... Math
a.about
b.on
c.for
d.to
3.She made some interesting ... about the film
a.comments
b.commenting
c.commences
d.commends
bài lớp mấy vậy bạn?????