单项选择题

Everyone involved in this matter should make a _________ not to leak the secret.

A．pledge
B．warranty
C．assurance
D．guarantee
<上一题 目录 下一题>
热门 试题

单项选择题
He _________ the government's rule against taking large amounts of cash out of the country.
A．defied
B．refuted
C．excluded
D．vetoed
单项选择题
The meaning of this poem is very _________ ; I really do not understand it.
A．obscure
B．explicit
C．objective
D．implicit
相关试题