betty looks a little ____ than she was a month agoA.thinB.thinerC.thinnerD.thinnest

betty looks a little ____ than she was a month ago
A.thin
B.thiner
C.thinner
D.thinnest

应该选C
句意为:贝蒂看起来比一个月前更瘦了.
应用比较级thin的比较级为thinner
希望你满意O(∩_∩)O~

C