Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.
Animals like frogs have waterproof skin that prevents it from drying out quickly in the air, sun, or wind
A.have
B.that
C.it
D.wind
C. Đúng phải là them để hợp với frogs đã nói ở trước. Xem http://bit.ly/_daitu