Bill is running so fast!I _________believe my eyes.（ ）
A．needn'tB．shouldn'tC．mustn'tD．can't
Our English teacher is nice and patient she is very strict with us．（ ）
A．ifB．asC．unlessD．though
﹣The air here is much fresher than before．
﹣Exactly! We a lot of trees in the past few years．（ ）
A．plantedB．were planting
C．have plantedD．will plant
﹣This time， we must depend on ourselves to solve the problem．
﹣I agree． but we ourselves can find a way out．（ ）
A．EverybodyB．NobodyC．SomebodyD．Anybody
﹣ Hi， Jill． I'd like to share with you the latest news about the height of Qomolangma．
﹣Really？ Make sure the news is true before you it．（ ）
A．receiveB．spreadC．cancelD．hear
﹣China has formed a deep friendship with countries around the world．
﹣That's true． We are working together in many fields．（ ）
A．closelyB．nervouslyC．terriblyD．humorously