A．unhappy B．unsatisfiedC．unusual D．unsuccessful

【C14】A．unhappyB．unsatisfiedC．unusualD．unsuccessful

I perceived a note of unhappiness in her voice.A.conceiveD．B.deceiveD．C.senseD．D.took

Which country is mentioned to have unsuccessful agricultural sector？A．Haiti.B．Nigeria.C．Zi

What has the company been unsuccessful in doing？A．Branding efforts.B．Applying new technolo

"Happy" and "unhappy" areA．non－gradable antonyms.B．root antonyms.C．derivational antonyms.D

__________[A] unusual [B] particular [C] unique [D] typical