... and other plant life play an important part in the natural __________ of water.
9. Modern farming practice has led to the virtual _______________ of this bird.
10. The giant panda is an _______________ ... soon.
-………………………………………………………………………………………………………
15. When is someone going to announce the results of the contest ?
-………………………………………………………………………………………………………
< IV >: Make the correct choice :
1. Half...
... interesting
D. they make teachers of history difficult to teach
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Practice test
I/ Choose the best option to complete the blank in each sentence:
1. The rulers of Viet...