This morning Diana invited ________ to ________ birthday party.
It's no use ____ ( complain). You should think of ways to do with it.
根据课文《蝙蝠和雷达》内容填空。
蝙蝠在夜间____怎么飞,____没见过它跟什么东西相撞,____一根极细的电线,它____能____地避开。