Question

Australian scientists have found 850 (a) ................. unknown species living in subterranean water, caves and micro - caverns. These insects, crustaceans, spiders and worms are (b) ................. only about one - fifth of the number of undiscovered species the researchers think exist (c) ................. amid the harsh conditions of the Australian outback. Two species of blind fish and two of blind eels were also (d) ................. “What we’ve found is that you don’t have to go (e) ................. in the depths of the ocean to discover new (f) ................. of invertebrate animals - you just have to look in your own (g) ................. ,” said researcher Andy Austin, (h) ................. evolutionary biologist at the University of Adelaide in Australia. a. (i) previous (ii) earlier (iii) before (iv) previously b. (i) expected (ii) like (iii) likely (iv) probable c. (i) under (ii) ground (iii) underground (iv) secretively d. (i) uncovered (ii) opened (iii) recovered (iv) covered e. (i) searching (ii) researching (iii) hunting (iv) penetrating f. (i) species (ii) group (iii) order (iv) class g. (i) background (ii) backyard (iii) yard (iv) back h. (i) a (ii) the (iii) some (iv) an

Answer 1

1. PREVIOUSLY
2. EXPECTED
3. SECRETIVELY
4. UNCOVERED
5. SEARCHING
6. BACKYARD
7. AN

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