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

Mark the letter A. B. C or D to indicate the underlined part that needs correction in each of the following questions.
5. Viet Nani exportsa lot of rice whichgrown mainly in the south of the country.
A. exports                   B. a lot of                    C. which                      D.grown
6. Although her awful pain, she triedto walk to die classroom to attend the lecturer.
A. Although                B. tried                                    C. to walk                   D.to attend
7. Those students are tryingtheirbestin order that get the scholarship.
A. are trying                B. their                                    C. best                         D.in order that
8. More schoolare using modem technology in teaching and learning English.
A. school                     B. are using                 C. in                            D.learning