There ______(be) a lot of questions that still remain unanswered.

The murder remained an unanswered mystery.

There are still several unanswered questions with the accident.

All my letters went unanswered. A: 系动词 B: 及物动词 C: 不及物动词

As previously ______ (state), these unanswered questions suggest areas that are in need of further study.

The question whether she had seen the murderer remained unanswered. A: subject B: object C: predictive D: appositive

______ (a figure of speech) is used in "Shall we allow these untruths to go unanswered, these misdeeds unreprimanded? No! "(Davis)

There are still several unanswered questions _________with the accident. A: connect B: to connect C: connected D: connecting

There are still several unanswered questions ______ with the accident. A: connect B: B. to connect C: C. connected D: connecting

_______ the growing interest in online learning, there are some basic questions regarding distance learning, which remain unanswered. A: If B: Despite C: In spite for D: Although