A. safe B. eight C. popularity D. where A. elephant B. cheer up C. listener D. make use of A. break out B. tiger C. less and less D. navigation A. longer B. big C. wax D. behave A. differently B. finish C. flourish D. one A. six B. cool C. such that D. motorbike A. two B. recycling C. obtain D. be made up of A. be concerned about B. tree C. eat the cake D. mend A. long B. linguistics C. make a decision D. bright A. cheekbone B. will C. justifiably D. four