【单选题】It’s necessary that not only ____to see a doctor but also stay at home for a good sleep. A. Bob should go B. did Bob go C. Bob’s going D. should Bob go
【单选题】It’s necessary that he ______ a recognized qualification. A. has B. have C. had D. having
【判断题】在垄断市场中,供给者的平均收益曲线与边际收益曲线处于分离状态。()
【单选题】It’s necessary that _____ them to give us a hand.
【单选题】In order to do something meaningful, it’s necessary that you _______ determine what is really important.
【判断题】在垄断市场中,供给者的平均收益曲线与边际收益曲线处于粘合状态。()
【简答题】It’s necessary that the president ________ in time to attend the meeting. A) came B) will come C) come D) comes
【单选题】在贝尔格题献勋伯格的作品《室内协奏曲》中,第一乐章的三个声部不包括:
【单选题】It’s necessary that an efficient worker________his work on time.