The scientists say they do not know how the treatment would work with patients who have no sensation at all below the injury.

VOA: special.2011.06.01

Now,we admit that we do not know how this expression developed.

VOA: special.2009.06.28

We are worried because we do not know how long they will stay or how we will take care of them.

VOA: standard.2009.10.27

"You do not know how bad that is going to be. There have been children who have died from the swine flu,".

VOA: standard.2009.12.18

"I have been blown up three or four times,three times, and I have been shot at I do not know how many times and then I had diphtheria, measles and pneumonia,"

VOA: standard.2009.11.04

Dr.Vallenas says many mothers are discouraged from breast-feeding because they do not know how to get their baby to latch on properly to the breast's nipple, or because they suffer pain and discomfort.

VOA: standard.2009.08.01

Let us say I want to sell my car but I do not know exactly how much it is worth.

VOA: special.2009.04.12

But Chad Reissig says scientists do not know a lot about them and how they interact with each other and caffeine.

VOA: special.2009.07.22

They do not know why da Vinci painted it, or how it ended up in the collection of French ruler Francis the First.

VOA: special.2010.06.23

How could I answer the child? I do not know what it is any more than he.

VOA: special.2009.04.12

Doctors do not know exactly how the brain stimulation works to help patients with Parkinson's.

VOA: special.2009.02.03

Jeffrey Olson says experts do not know what will take the place of the plants and animals that are lost, or how wildlife will survive in a changed environment.

VOA: special.2009.09.28

How old I do not know.

VOA: special.2010.07.10

How do we know that they are not going to keep it all?" The United States and allies France and Russia have supported the IAEA draft deal with Iran as a means to alleviate concerns that Tehran is using its nuclear program to develop atomic weapons covertly.

VOA: standard.2009.10.28