Do you enjoy Ma Di’s songs—–Yes. I like his song Nan Shan Nan. I can’t think of anyone with ________ voice.

Do you have any idea when the project will be carried out?—No, but I have heard that it was not until last month _______ it was approved

下列句中加点词的解释，不正确的一项是（　　）

How much are the two pairs of shoes? —They are not expensive. I think fiftydollars ______ enough.

My mother has a cold today, and I haveto take care of her.— .