A. perturb B. catch fire C. hypocrisy D. roller-blading A. strike B. Olympic C. feline D. with A. snack B. army C. happen D. ash A. sadly B. along with C. bronchitis D. glare A. rapidly B. feather C. necklace D. run down the stairs A. cell B. scramble C. close to D. thankfully A. disturb B. pick up C. indescribable D. good-humouredly A. by the end of B. wave C. dagger D. take apart A. download B. portrait C. attention D. eruption A. obvious B. uniquely C. next D. equator