题目内容：

The little girl did her best _ others.A to come up with B catch up with C.not to fall behind

优质解答

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...