I'm very sorry to keep you waiting.

对不起，让你久等了。

《牛津词典》

Sorry to keep you waiting, but I was pretty sure I had made the right decision to have you in our company even before you came into this office.

抱歉让你久等了，但在你进到办公室之前，我就很确定，让你来我们公司是正确的决定。

youdao

B: Sorry to keep you waiting.

乙：对不起，要你们久候。

youdao

Failing to fetch me at first keep encouraged, Missing me one place search another, I stop somewhere waiting for you.

VOA: special.2009.04.12

Sorry to keep you waiting.

WHITEHOUSE: President Obama on Tax Cuts and Unemployment Extension

You keep waiting for Zhang, the impeccable stylist, to stop and stare.

NEWYORKER: To Live

Also, consider adding a provision to give a specific person--say a friend or relative--visitation rights if you're hospitalized. (Otherwise, hospitals might impose restrictive visitation policies.) You may also want to spell out your wishes about organ donation--for example, state if you want your agent to keep you on life support while waiting for a donee match.

FORBES: Healthy Precautions