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1. i don't think bringing .....species back to life is a good idea . that's going against the laws of nature.
A. extinction       B.extinct           C. extinctions         D. extinctive
2. she looks very familiar to me. i'm qiute ....i've seen her before.
A. relieved           B. doubtful             C.fortunate            D.certain
3.if you don't work hard, you won't be able to....your friends
A. keep up with            B. look forward to          C. run away from            D.pay attention to