fill in the blanks with the words in brackets.change the verbs into active or passive The E.coli bacteria........(1.cause) great harm to people.in 2011,many peo

fill in the blanks with the words in brackets.change the verbs into active or passive
The E.coli bacteria........(1.cause) great harm to people.in 2011,many people.....(2.infect) by E.coli bacteria.they ....(3.develop) food poisoning .the infection.....(4.start) in Germany.vegetablea.....(5.presume)the source of the infection .the healt authorities.....(6.search) the evironment where the vegetables......(7.come) from.they......(8.think) the harmful bacteria....(9.exist) in the soil. then,many tons of vegetables.....(10.destroy) to prevent other people from gentting sick