The little girl did her best _ others.A to come up with B ca

正确的答案是 C.not to fall behind
这个考题不只是测试语法,也是语境的测试,
3 个选项里
选项 A 虽然语法对,但不符合句子的语境,
选项 B 有语法错误 （catch up with 前面要有 to ),
只有 C.not to fall behind 从语法和语境看是正确的.
Not to fall behind 的意思是 “赶上”,“不落后”
The little girl did her best not to fall behind others.
是说
女孩儿做她做最大的努力不落在别人后面.
希望帮到了你,
我是加拿大人,前海外英语老师.