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3.　　　　　 The teachers have ruled out the_________(possible) that he cheated in the examination.

2.　　　　　 The concerned parents and the teachers went into the forest in________(searching) of the missing child.

1.　　　　　 Sometimes scientists are __________(puzzle) by some unexplained phenomena.

11、similar adj.___________(n.)　　　 12、exist v.__________(n.)

10、disappoint v.____________(n.)___________(adj.)____________(adj.)

9、evidence n.___________(adj.)　

8、possible adj.___________(n.)_________(反)___________(反n.)

7、explain v.___________(n.)　

6、murder n. & v._________(adj.)________(人)　

5、convincing adj.________(v.)__________(adj.)