giúp mình với mn ơi !!!

`8.` I haven't had such delicious meal before.

`-` This is the first time S V2/ed such a/an adj N.

`=` S haven't/hasn't V3/Vpp such a/an adj N before.

`9.` The last time I saw him was 8 days ago.

`-` S haven't/hasn't V3/Vpp since`/`for time.

`=` The last time S V2/ed was time ago.

`10.` It is Monday since I last took a bath.

`-` S haven't/hasn't V3/Vpp since`/`for time.

`=` It is time since S V2/ed O.

`11.` We have not seen Tom since he moved to Bristol.

`-` S last V2/ed time ago.

`=` S haven't/hasn't V3/Vpp since`/`for time.

`12.` She hasn't written to me for `2` years.

`-` S last V2/ed time ago.

`=` S haven't/hasn't V3/Vpp since`/`for time.

`13.` I haven't visited the city museum for `5` years.

`-` S last V2/ed time ago.

`=` S haven't/hasn't V3/Vpp since`/`for time.

`14.` Kate has not appeared in showbiz since `2012.`

`-` S last V2/ed time ago.

`=` S haven't/hasn't V3/Vpp since`/`for time.

`15.` He has not changed his job for a month.

`-` S last V2/ed time ago.

`=` S haven't/hasn't V3/Vpp since`/`for time.