For questions 1-9, read the text below and think of the word which best fits the gap. Use only one word in each gap.

The world’s smallest frogs

Indian scientists have discovered seven new species of the tiny creatures known (1)…………… night frogs. Some of these are (2)…………… small that they can easily fit onto a coin or fingernail. Indeed, the smallest of the new species is just 12 millimetres long, only a little bigger than the world’s smallest identified frog (3)…………… measures an incredibly tiny 7.7 millimetres.

Many of the previously-identified 28 species of night frog have only been discovered in the last few years because locating them (4)…………… be very difficult. (5)…………… is not only because of their size, (6)…………… because they hide away under leaves and other vegetation. They also make calls which sound (7)…………… insects’ calls and when scientists draw near, they stop calling altogether.

At the moment, the frogs are fairly widespread in certain regions of India, but they will soon need protecting due (8)…………… an increased human presence near their habitats. Whole populations of the frogs could quickly become extinct (9)…………… these habitats were to suddenly change.

Answer

1 as   2 so   3 which   4 can   5 This / That  

6 but   7 like   8 to   9 of

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