Wangxin asked him to meet ar the school gate and ___ supper

have
and后面的时态和前面的meet保持一致

had 跟前面的时态--ask-- 一致
and 连接的是两个并列的成分，时态要一致

have
解释：王林让他在校门口见面并且一起吃饭。通过翻译可知：见面和吃饭是并列关系，所以它们的时态相同。ask sb. to do sth. ，前面已经有to了，所以meet和have都是原形，所以吃饭的吃也用原形have

have ,ask sb. to do sth.