GRE Text Completion: Manhatton-GRE填空Manhatton - ST1VYU0A46ZN8GCV=

The presidential candidate, known not only for the deeply reasoned content of his prepared speeches but also for the fiery brilliance of his delivery, badly miscalculated his ability to perform equally successfully when delivering ____________ answers to unexpected queries form the media. A. extemporaneous B. capricious C. lubricious D. disingenuous E. impromptu F. premeditated