It took us about ________ to fly to Hong Kong.

下列加点字的解释全都不正确的一项是（ ）

At present, many people like talking about “Kuaidi” and “Didi”. I really wonder ______.—You call to order a taxi through them on your mobile phone easily.

I’ll meet you outside the cinema in anhour， OK— ____

He’ll come _______ I promise him tobuy that new dictionary.