Which of the following sentences uses a hyphen correctly? a. i need thirty-six colors for this painting. b. i looked under the bed-and there it was! c. i've only read one-third-of the book so far. d. i have to buy my grand-father a present.

How are the two arguments made in the passages different? a. the first passage claims that pets in class will children with health problems; the second passage says pets will make some health problems worse. b. the first passage claims that students’ nervousness will decrease around pets; the second says that students’ nervousness will increase around pets. c. the first passage claims that pets will make the teacher’s work easier by keeping students busy; the second passage says pets will make the teacher’s work harder. d. the first passage claims that pets in school will be good for kids’ mental health; the second passage says pets will be bad for kids’ mental health.