A. toothpaste B. everyone C. brighten D. mystery A. activity B. clear out C. butter D. quite a few A. starvation B. staff C. luck D. wait A. interview B. annoying C. hill D. customs A. someone B. clerk C. keep a secret D. CD A. die from B. phase C. preserve D. trader A. change one's mind B. sang C. metro D. building A. easy B. vain C. lose weight D. difference A. head teacher B. Respectable C. theoretical D. below A. volcanologist B. go to C. bicycle D. rob