4. Fill in the blanks with appropriate prepositions.

a. That is exactly the conclusion we arrived .....at..........

b. Here comes the person that we have been waiting..............

 c. What are you looking ................?

d. I'm looking ............... your new hairstyle.

e. Fatima was telling me ...........  a book last  Monday.

f. Is this the book that Fatima was telling you .................?

g. What have you been thinking................?

 h. I was thinking................what happened in the last meeting.

i. This is the book I was referring ...................

j. The  tall lady.......................  the counter is my elder sister. .