1,--When will the lecture begin?

1,--When will the lecture begin?--When the students______。A have sat 学生们已经做过坐的动作。不妥!B sat down 学生们坐了下来。不妥!C will sit 学生们将要做坐的动作。不妥!D are seated：seat是及物动词,后面必须带宾语（the students seat themselves 学生们使自己坐好）或者用被动（the students are seated学生们就座 ）2,First,it is important to recognize what kind of person you are and whitch special qualites make you ______from everyone elsemake you + different（形容词补足语）,使你具有与。。。不同的特征3,It is not unusual that rain ____ without stopping these days of the year。It is not unusnal是指现在不同寻常,主语从句中的rain一定是现在总在下而不是正在下也不是已经下锅,所以要用一般现在时。4,The trouble she is having ___the computer is so great that she doesn't know whom to turn___答案：Btrouble与介词with搭配表示“。。。有故障”；turn to 意思是“求助于”,whom在这里是宾语提前,也就是turn to whom,“求助于谁”,但是疑问代词只能放在turn to前而不可以放在后。