Correct the given sentence gramatically.

Shreya, who she is my best friend, is a singer.

Improve the given sentence if necessary.

He reached his destination at night.

Improve the given sentence if necessary.

We are doing this in the interest of the poors.

Improve the given sentence if necessary.

He wanted my permission to taking part in sports.

Improve the given sentence if necessary.

He decided to take the help of a guide lest he may miss the way.

Improve the given sentence if necessary.

I would rather have a noble enemy than a mean friend.

Improve the given sentence if necessary.

Suppose  if you  are  selected,  will  you  give us a treat?

In the following items, each passage consists of six sentences. The first and the sixth sentence are given in the beginning as S1 and S6. The middle four sentences in each have been removed and jumbled up. These are labeled P, Q, R and S. You are required to find out the proper sequence of the four sentences and mark your response accordingly on the Answer Sheet.

S1 :There is no doubt that the rules governing imports, manufacture and the use of pesticides need to be further tightened up.
S6:At the same time, better pollution control measures are needed to check the discharge of poisonous gases and chemicals by a host of other industries which are equally responsible for poisoning our world.
P:But a more practical and feasible approach is required to tackle this problem.
Q:No one can deny the importance of pesticides in our agriculture.
R:The proposed amendment is an attempt at doing this, but in the process it seems to have gone overboard in most cases.
S:Even today, nearly a fourth of our crop is lost due to pests and weeds.

The proper sequence should be 

In the following items, each passage consists of six sentences. The first and the sixth sentence are given in the beginning as S1 and S6. The middle four sentences in each have been removed and jumbled up. These are labeled P, Q, R and S. You are required to find out the proper sequence of the four sentences and mark your response accordingly on the Answer Sheet.

S1 :A single device can heat fluids without requiring an electrical element.
S6:Because there is no electrical element, there is no risk of fire, so the system is suitable for dangerous environments.
P:A heat exchanger transfers heat from the central cavity to an air heater, a water heater or an industrial processor.
Q:It has a container like the crank case of a car’s engine, which contains the fluid to be heated.
R:Compression and friction at the nozzles heat the fluid so that the temperature in the central cavity rises steadily.
S:A motor and pulley insidethe container turn a rotor wheel, which in turn forces the fluid again and again through narrow nozzles into a central cavity.

The proper sequence should be