There is no doubt ________ the Diaoyu Island is part of China’s territory.

Tommy couldn’t stop thinking about the boy made him a fool in front of the whole class.

Why not play the music we listened to to yesterday?—-Because it _____old times.

下列各句中，加点词的用法与其他三句不同的一项是（ ）

Hnot to buy expensive ones and trying my best to save money.