Sentence examples similar to hardly know how long from inspiring English sources

Sewell needs to know how long.

I don't know how long.

Know how long to continue.

Know how long this condition will last.

Know how long you will be contagious.

Know how long the symptoms might last.

Know how long summer camp will be.

Know how long your plane is flying.

Know how long it will take.

Know how long the salad can last.

Until they know, they hardly know how to go ahead.