根据所给汉语提示完成句子。

l. If you don't work hard, your dream will never ________ ________(实现).

2.I ________ _______(寻找)my lost dog everywhere, but I didn't find it．

3. He seemed _________ __________(喜欢)his new neighbour.

4. Shanghai is one of ________ _________ _________(最大的城市)in the world.

5. She studied for some time, and then she _______ ________ (感到厌倦).

支持以快速资源确认，是网络资源集中管理达标（）级标志之一。

A.基础

B.提升

C.优秀

D.提高