Kept

Do you like to be kept waiting?

Your room must always be kept clean.

Urgent business kept me from going shopping with you.

Urgent business kept him from going to the concert.

She kept her valuables in the bank for safety.

The train was so crowded that I was kept standing all the way.

As the train was crowded, I kept standing all the way to Kyoto.

Some people kept interrupting the speakers, and finally broke up the meeting.

The cold weather kept us indoors.

We have kept in constant touch for twenty years.