1 . Africa is a ________ land to him. (mystery)(所给词的适当形式填空)

2 . The universe is very ________(mystery). There are many unknown things out there. (所给词的适当形式填空)

3 . The whole thing seems very _______ (mystery). (用所给词的适当形式填空)

4 . One interesting and ________ (mystery) thing about Shengnongjia is its legend of wild men. (所给词的适当形式填空)

5 . This picture seems like quite a ________ (mystery) scene. (所给词的适当形式填空)

6 . He was being very________ (mystery) about where he was going.(所给词的适当形式填空)

7 . Why are you so ________(mystery)? Why don’t you tell me outright(直率地)? (所给词的适当形式填空)

8 . Why are you so ______ (mystery)? Why don’t you tell me all the truth? (所给词的适当形式填空)

9 . There is something ________ (mystery) about the childhood of this famous writer. (所给词的适当形式填空)

10 . She died in ______________ (mystery) circumstances. (所给词的适当形式填空)