她正在为明年奥运会的参赛资格而竞争。

She's ___competing for a place in next year's Olympics.

你参加100米赛跑吗？

Are you ___competing in the 100 metres?

我想参加自行车比赛，但我的自行车旧了。

I want to ___compete in the cycling competition, but my bicycle is old.