Which two signs should be interchanged to make the given

Find the appropriate word.

What are the drawbacks of subsidies on producing energy using fossil-fuel?

Find the appropriate word for Blank 4.

Choose the most appropriate option for blank no. 1

________ aim in life is to provide happiness _______ enable a harmonious atmosphere _________ everyone forever.

Select the most appropriate option for blank no. 1.

Select the most appropriate option for blank No. 5.

Fill in the blank with the most appropriate word.

Select the most appropriate option for blank No. 4.

  Select the most appropriate option to fill in blank number 1.