Choose the underlined part that needs correcting in each sentences helow:

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Choose the underlined part that needs correcting in each sentences helow:
31. Books can be used (A) as a tool opening (B)up (C) new worlds for (D) children.
32. Spend (A) time with family can always be (B) the most precious(C)experience (D) to anyone.
33. According to a research, sending(A) lext messages or using (B) Facebook while daing (C)
homework reduce (D) students' overall GPA.
34. It is important for (A) parents to teach (B) their children how using (C) soci. Media wisely (D).
35. Euch (A) person have (B) different wavs (C)to relax (D) ia their free time.