The runner fell behind the others though he did what he could.
The runner _______to keep up with the others though he ______ _______ _______.
The runner fell behind the others though he did what he could.
The runner _______to keep up with the others though he ______ _______ _______.
The runner ___hardly____to keep up with the others though he __do____ ___his____ _____best__.
虽然那个田径运动员做到自己的最好,仍然不能赶上其他的队员
参考一下。