I'm not sure if you ...... (offer) me the position I'm asking for.

I really don't know if the fat cat ...... (catch) the cunning mouse.

The public isn't certain if the police ...... (apprehend) the criminals.

The designer isn't sure if his associate ...... (turn) up at the meeting on time.

We don't really know if the prices ...... (go) up or down.

The company manager doesn't know if the head count ...... (stay) the same next month.

The soldiers aren't sure if the enemy ...... (attack) at dawn.

The IT specialist doesn't know if his wife ...... (ever / get) pregnant.

Jason's aunt isn't sure if she ...... (repay) the mortgage in ten years.

The surgeon doesn't know if he ...... (operate) on Mr Davidson today.

Those lawyers over there don't know if the hearing ...... (be) held on Monday or Tuesday.

The president elect isn't positive yet if he ...... (appoint) Mr Browney as his security advisor.