Idiom
Despite the trust bestowed on the minister he turned out to be a snake in the grass during the revolution.

a treacherous person
an unforeseen danger
a secret enemy
an unexpected misfortune

ANSWER DOWNLOAD EXAMIANS APP

Idiom
To cool one's heel

To be kept awaiting someone
To give no importance to someone
To rest for sometime
To remain in a comfortable position

ANSWER DOWNLOAD EXAMIANS APP