Sentence Completion

1- ..................................... , one of which is that they carry heat and electricity very well.

A- It should be remembered that metal are strong, hard and tough

B- These features are true of most metals, but not all

C- Metals can be polished to obtain a smooth, shiny surface

D- The metal mercury is a silvery liquid at normal temperature

E- Metals have several features that the non-metals lack

My answer is E

2- ..................................... , ninety-eight per cent of them live in developing or poorer countries

A- Even though there are some people who go hungry in wealthy countries too

B- As there are many advanced techniques to increase the worldwide food production

C- If only the wealthier nations were aware of the destruction they have been causing

D- By the time we find a solution to the problem of hunger in Africa

E- Whether or not there will be enough clean water in some parts of the world

My answer is A