— Congratulations, Sam! I knew you could win the high jump event

— Congratulations, Sam! I knew you could win the high jump event.
—_________________________
A、Thanks. It was a tough competition.
B、It is so easy.
C、I knew I could win.
D、Certainly.
【正确答案】：A
【题目解析】：Thanks. It was a tough competition.​ 谢谢。这是一场艰苦的比赛。