`~rai~`
`text{1.didn't go->hadn't gone(câu ước không có thật ở QK)}`
`text{2.was going->went}`
`text{3.going->go(used to +V-inf:quen làm gì trong QK)}`
`text{4.do->doing(be used to+V-ing)}`
`text{5.told->tell}`
`text{6.build->built(two thousand years ago->QKD)}`
`text{7.live->living(get used to+V-ing)}`