他坚持要自己修理电脑，不让别人帮忙。

He ___insists on fixing the computer himself and won't let anyone help.

尽管没人相信，她仍然坚持说她亲眼看到了外星人。

She ___insists that she saw an alien with her own eyes, even though no one believes her.

尽管天气很冷，她坚持每天早上游泳。

She ___insists on swimming every morning despite the cold weather.