Sita : where is my wallet?
Awang : Are you okay?
Sita : I don't know. I think my wallet is lost.
Awang : Are you certain about it?
Sita : Definitely.
Awang : Don't worry. Let me help you to look for your wallet.
Sita : Oh.. Thank you so much, you're really my best friend.
Awang : you're welcome. By the way, where is the last place that you think your wallet already lost?
Sita : emm, may be in the park.
Awang : Are you certain, your wallet is lost in the street to park?
Sita : I am uncertainty. I think it was lost in the grasses at park.
Awang  : Are you sure?
Sita : I am pretty certain.
Awang : okay, let's search my wallet together.