Jack sees a bird fly,fly可不可以加ing?

Jack sees a bird fly,fly可不可以加ing? The girl sees the purple bird fly. Fly a bird like 连词成句 Just like a bird,fly on the A bird can fly.(改为否定句) I saw a bird fly to the north fly ing 是还是 fly Bird can fly if i were a bird,i would fly to you There is a bird fly in the sky改错 I w__ I could fly like a bird. I wish I could fly ___ a bird. -where is the bird?-it_____(fly)away a moment ago Can a bird fly?有什么深层意思吗? bird fly I like a not can怎么拼成一句话? A bird can fly .(改为一般疑问句） A bird was seen___(fly)into the classroom yesterday. It is n___ for a bird to fly. I wish I were a bird or could fly like a bird