English practice daily

#TOEIC Recognition Test http://ift.tt/20WZ1gD These seismic events [apparently] start when [a single] host is simultaneously [infected with] [flu virus] from two different species, A. apparently B. a single C. infected with D. flu virus Choose the correct answer. Please think first before choosing the answer. It's good for your brain. (^_^) #studyenglish #learnenglish #english