I don't think the experiment is _____ failure. At least we have got _____ experience for our
future work on _____ nature.
| A．/; /; / | B．a; /; the | C．a; /; / | D．/; the; / |
相关试题
It is important that we wild animals.
| A. will protect |
B. should protect |
C. shall protect |
D. are protecting |
Under no circumstances, he was warned, _____ to give the password to someone else.
| A．he was | B．was he | C．he could | D．could he |
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