Bài `4:`

`1`. The house has been tidied for Tet by the Smith.

`->` Câu bị động hiện tại hoàn thành: S + have/has + been + Vpp

`2`. He hasn't met her since 2005.

`->` The last time + S + V2/ed + was + in + thời gian 

`=` S + have/has + not + Vpp + since + mốc thời gian 

`3`. The young man said (that) she had to go to Caro the next day.

`->` Câu trần thuật: S + said (that) + S2 + V lùi thì 

`->` must `->` had to, tomorrow `->` the next day

`4`. She asked me if I had some friends in that town.

`->` Câu trần thuật có từ để hỏi: S + asked + (O) + if + S2 + V lùi thì (this `->` that)