Does my son listen to the teacher attentively in class—Rarely, believe it or not, ________ him behave well in class.

按顺序排列下面几个句子，组成语意连贯的一段话，排序最合适的一项是（ ）人的眼中、心里，总有一个前方。　 因此，这世界上就有了路。①他们仿佛从苍茫的前方，听到了呼唤他们前往的钟声和激动人心的鼓乐。②这种不确定性，反而助长了人们对前方的幻想。③前方使他们兴奋，使他们行动，使他们陷入如痴如醉的状态。④他们不知疲倦地走着。⑤前方的情景并不明确，朦胧如雾中之月，闪烁如水中之屑。

The committee is discussing the problem right now. It will _____ have been solved by the end of next week.

Could you tell me —Certainly.

o the ______ of this medical technology, some diseases can be treated at an early stage.