【单选题】Jack is not very decisive, and he always finds himself in a ______ as if he doesn't know what he really wants to do.
【单选题】.He might have_____ his idea about the art at the exhibition much better if he had planned what he wanted to say.
【简答题】What is the main goal of sending human missions to Mars? A) To find out if life ever existed there. B) To see if humans could survive there. C) To prove the feasibility of large-scale space ventures. ...
【简答题】Something must be done to pr factories sending out poisonous gases so as to keep the city _________. A polluting B. from polluting C. pollute D. from being polluted
【单选题】. I think immediate action should be ____to pr the facories sending out waster
【单选题】The boy was having a class when the earthquake broke out in yushu. He could have been killed if he with his family.
【单选题】-----Who is responsible for sending out misinformation? ----Most of the fault lies _____ the administration.
【单选题】Sending Sandra a letter was ________,because her husband might intercept (截取) it.
【单选题】—Does Ted tell you if he next Sunday? —No, he doesn’t . But if he , I’ll give you a ring.
【单选题】The sun is shining in the sky and sending out ______ light and heat.