is no doubt 　　　　Bob can win the first prize in the match.

Donald Trump made a _____ to the nation that he would struggle for lower taxes and improve health care after taking office.

Travelling on the bad mountain roads is a(an)________ experience and I will never risk my life like that.

Mr. Richard was disappointed that manystudents who had signed up for his adventure course _______ at the last moment.

It was not until then that I came to know that knowledge _______ only from practice.