【单选题】—Now the air in our hometown is even than it was before. —So we must do something to stop it. [ ]
【简答题】If you are a(__) to someone for something that you do, you are responsible for it and must be prepared to justify your actions to that person. (11 letters)
【单选题】Whatever we do in life,wherever life's storms___us,there must be something we can achieve.
【单选题】Something must be _____ about the city’s traffic.
【单选题】PNP 型晶体管工作在放大状态时,电位最高的电极(管脚)是( )。
【单选题】Something ______to save our earth. Do you think so? A. can do B. must do C. has to do D. must be done
【单选题】Something ___ to save our earth. Do you think so?
【简答题】NPN 型晶体三极管工作在放大状态时,三个极中电位最高的是 极。 PNP 型晶体三极管工作在放大状态时,三个极中电位最高的是 极
【单选题】— What a mess! — Hurry up! Something ______. The guests are coming. [ ]