我从窗户向他挥手,但他没有注意到。
I ___waved at him from the window, but he didn't notice.
她非常生气,甚至不愿意向我们挥手道别。
She was so upset that she wouldn't even ___wave goodbye to us.
她向我挥手,我报以微笑。
She ___waved at me and I smiled back.