After driving Professor Kumar to the museum she dropped him at his hotel.

A. After she was driving Professor Kumar to the museum he was dropping him at his hotel.
B. After she had driven Professor Kumar to the museum she had dropped him at his hotel.
C. Professor Kumar was being driven to the museum first, then he was being dropped at his hotel.
D. After being driven to the museum, Professor Kumar was dropped at his hotel.
✅ The correct answer is option D.

One of the girls in the class will sing the national anthem at the end of the function.

A. A girl to sing national anthem is there in the class.
B. The function will end, a girl will sing national anthem at the end of the function.
C. The national anthem will be sung by one of the girls in the class at the end of the function.
D. There is a girl in the class who sings national anthem.
✅ The correct answer is option C.