下列词语中没有．错别字的一组是( ）

下列加点成语使用正确的一项是 (　　)

（2015·重庆）Last year was the warmest year on record, with global temperature 0.68 ℃ ________ the average.

He is no longer a child，and let him learn to________the problem himself.[ ]

It was reported that an agreement ____ between the two companies and that they would carry out a project together