Unit 5Reading TwoChoose the best answer for each of the following.1. The writer felt that his legs were hurting because ___________.a. he hurt himself when playing tennisb. he was too old to participate in such activityc. he didn’t scoop up the ball appropriatelyd. something had gone wrong in his legs before he could feel it
选项：
a. he hurt himself when playing tennis|b. he was too old to participate in such activity|c. he didn’t scoop up the ball appropriately|d. something had gone wrong in his legs before he could feel it