They said they were not sure about his decision to withdraw from university studies to play poker.

VOA: special.2010.07.26

When people examine this document, they will say, 'He was not sure about that.'

VOA: special.2009.10.08

But some people are still not sure about these programs.

VOA: special.2010.06.17

And doctors still are not sure about the cause.

VOA: special.2009.04.07

Experts do not know for sure about his mother,Caterina.

VOA: special.2010.09.15

There was something else that was worrying Oive, and she did not know just how to begin to talk about it At last,she spoke out, not sure what Nate's answer would be.

VOA: special.2010.01.09

So let us see it. I am sure I will help him. Do not worry about it.

VOA: standard.2009.11.08

But U.S.Republicans are not so sure about the president's plans for the economy at home.

VOA: standard.2009.04.11

The onus is really on the government of the United States to reveal more about the ways in which it makes sure that arbitrary executions, extrajudicial executions are not, in fact,being carried out through the use of these weapons,".

VOA: standard.2009.10.27