he is happy ( ) his old frind at the airport.meet ,to meet ,meeting,meets
问题描述：
he is happy ( ) his old frind at the airport.meet ,to meet ,meeting,meets
答
he is happy (to meet ) his old friend at the airport.他很高兴在机场碰到他的老友.
考察be happy to do sth很高兴做某事；高兴做某事