我问她是否同意这个计划，她只是轻轻嗯了一声。

When I asked if she agreed with the plan, she just gave a quiet ___hm-hmm.

当我问他是否喜欢这部电影时，他只是含糊地嗯哼了一声。

When I asked if he liked the movie, he just gave an ambiguous ___hm-hmm.