And when you're an old man like keep using it.

You may need to keep using this medication for up to 5 years.

People should find a way to keep using computers safe.

Keep using birth control for at least 6 months after your treatment ends.

"If we don't come up with an alternative, people are going to keep using them."

"How are we going to learn your language if you keep using only new words?"

In the fall, most of the staff members were laid off but allowed to keep using the office.

So, either keep using the copies you have or buy one from someone that doesn't need it already.

They were wood; that was the word she kept using.

Once they have tried the drugs, many will keep using them.