下列语句中,加点词语使用恰当的一项是（ ）

My coat costs little. What about ________―_______ is expensive.

I put the medicine on the top of the desk to make sure it would not be _____ to my son.

Waiter! How soon can I get my food I just havehalf an hour left before my train leaves.– It ______ be ready in five minutes.

184 There’s no wind now We can’t _______kites on the playground