Question

英语中译英直到二十世纪初人们才学会怎样防止这种疾病的蔓延（Not until)我们只有面对现实才能找到解决问题的办法（O

Answer 1

Not until the beginning of the 20th century did people learn how to prevent the disease from spreading.

Only facing the reality, can we find the solution to the problem.

I am much oblided to you for looking after my pet.