V Decide which answer A, B, C, В best fit each space. Choose and insert the correct verb.

V Decide which answer A, B, C, В best fit each space. Choose and insert the correct verb.

After studying rainbows in 41)……….., Sir Isaac Newton was able to explain how they are formed. However, he was colour blind, so he had to 42)…………on the eyes of his assistant, who could easily recognize all the seven colours: red, orange, yellow, green, blue, indigo and violet. His assistant could also clearly 43)………..the difference between indigo and violet.

There are two types of rainbows. Primary rainbows are the most common and have the most distinctive colours, with red 44)………on the outside of the arc and violet on the inside. Secondary rainbows are unusual because the light is reflected twice within the raindrop before it forms a rainbow, so the colours are in 45) ……… order and not as bright as primary rainbows.

There is a popular myth that if you reach the end of a rainbow, you will find a pot of gold waiting for you. In 46)……… it is impossible to do this, because has no end – as you go towards the point where the rainbow 47)……… to touch the ground, it moves away from you as quickly as you approach.

1 depth

2 length

3 width

4 breadth

1 rely

2 trust

3 hope

4 believe

1 say

2 speak

3 talk

4 tell

1 appearing

2 happening

3 viewing

4 revealing

1 behind

2 back

3 return

4 reverse

1 case

2 spite

3 time

4 fact

1 sees

2 seems

3 looks

4 shows

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