The murder remained an unanswered mystery.

There are still several unanswered questions with the accident.

As mentioned in Paragraph 4, a key question unanswered about homework is whether[u]    .[/u] A: it should be eliminated. B: it counts much in schooling. C: it places extra burdens on teachers. D: it is important for grades. 未知类型：{'label': None, 'content': '', 'isMemberControl': 0, 'type': 181}

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

Man: How did Eddy do in the interviewWoman: He left the room with only one question unanswered.Question: How well did Eddy do in the interview A: He answered all the questions very well. B: He left as soon as he heard the last question. C: He left after he asked only one question. D: He answered all the questions but one.

The book _______is not available at the library. A: at question B: on question C: in question D: for question

His honesty is _____________. A: beyond question B: out of the question C: in question D: no question

______ (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

Example 4 Question 1: ________. Question 2: ________. Question 3: ________.