what is ( )提示词fly in the sky

问题描述:

what is ( )提示词fly in the sky

What is (flying) in the sky?
天上有什么正在飞?
要用现在进行时态,动词加ing.A girl is running and ( )呼喊 for help?谢谢帮个忙A girl is running and (shouting )呼喊 for help.一个女孩正在跑并呼救。