it___late in the evening___the first suspected case o influenza..A(H1N1)returning from Mexico was separatred at a hospital under the Infectious Disease Prevention Network.翻译1.wasn't until;that

it___late in the evening___the first suspected case o influenza..A(H1N1)returning from Mexico was separatred at a hospital under the Infectious Disease Prevention Network.翻译1.wasn't until;that
it___late in the evening___the first suspected case o influenza
..A(H1N1)returning from Mexico was separatred at a hospital under the Infectious Disease Prevention Network.
翻译
1.wasn't until;that

it___late in the evening___the first suspected case o influenza..A(H1N1)returning from Mexico was separatred at a hospital under the Infectious Disease Prevention Network.翻译1.wasn't until;that
这是个强调句,所以要用it was/is .that.结构,再根据意思,是到...才,后面的东西其实不是很重要,强调句式重点.