Question 25. They have built a new school in our village recently. A: A new school has been built in our village recently B: A new school has built in our village recently. C: A new school was built in our village recently. D: A new school has to be built in our village recently. . He asked me what the conservationists __________ so far to protect our environment. A: have done B: did C: do D: had doneQuestion 10. From 1865 to 1875, a remarkable _______________ of inventions was produced. A: variety B: collection C: diversity D: mixture