She asked me ________ I had returned the books to the library, and I admitted that I hadn’t.
A.when B.where
C.whether D.what
（2017·北京）The national park has a large collection of wildlife, _________ from butterflies to elephants.
A. ranging B. range
C. to range D. ranged
In the last few years, China ___ great achievements in environmental protection.
A.has made B.had made
C.was making D.is making
(2018·天津) I can't find my purse. I___________ it in the supermarket yesterday, but I'm not sure.
A.should leave B.must have left
C.might leave D.could have left
（2018·江苏）There is a good social life in the village, and I wish I _______ a second chance to become more involved.
A.had B.will have
C.would have had D.have had
（2018·江苏）By boat is the only way to get here, which is _______ we arrived.
A.where B.when
C.why D.how
