The athlete’s years of hard working _______ when shefinally won the Olympic gold medal

下列各句中，表达得体的一句是( )

You seem to be familiar with this city.-I_______here for three years. It’s great to be back.

There is ______ what the weather will be like

Mum, please help me preparethe things that I will take to school. — You are todo this kind of thing by yourself, aren’t you