他们之间只有口头约定，没有书面协议。

They only had a ___verbal agreement, no written contract.

他们更喜欢口头协议而不是书面合同。

They prefer a ___verbal agreement to a written contract.

在这个句子中，'sleeping'是一个从动词派生出来的形容词。

In this sentence, 'sleeping' is a ___verbal adjective derived from a verb.

她很善于言辞，总能清楚地表达自己的想法。

She is very ___verbal and always expresses her thoughts clearly.