Mark the letter A, B, C or D to indicate the underlined part that needs correction in each of the following questions.

Parents can help to solve their children's learned problems by volunteering in the classroom.

A. to solve

B. learned problems  

C. volunteering

D. the 

Mark the letter A, B, C or D to indicate the underlined part that needs correction in each of the following questions.

Modern art is on display at the Guggenheim Museum, a building with an unusually design.

A. Modern art

B. display

C. a building

D. unusually 

Mark the letter A, B, C or D to indicate the underlined part that needs correction in each of the following questions.

Alice in Wonderland, first published in 1865, has since being translated into thirty languages.

A. published 

B. has  

C. being

D. languages