①I had never had such a good opportunity in my life but somehow away____.
A.it went B. went it C.did it go D. it goes
②I _______ in the countryside for two weeks and I really have no idea what is happening here.
A. have stayedB.have been stayingC. stayedD.had stayed
③Where and how they found the boats with treasures _______made known up to now.
A. hasn’t been B. haven’t been C. wasn’t D.weren’t
④The task was so hard and time was so pressing(紧迫的) for him, ______ is why he didn’t do as well as before.
A. asB. whichC. whoD. that
详解每道题答案。谢谢