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253. We hope an invitation will be sent to us by them.

We hope we will be sent an invitation

(Future Simple Passive - will be+V3)

254. A new job has been offered to me by them.

I  have been offered a new position by them

(Present Perfect Passive - have/has been+v3)

255. This medicine has been prescribed to me by my doctor.

I  have been prescribed this medicine by my doctor

(Present Perfect Passive - have/has been+v3)

263. we hope an invitation will be sent to us by them

264. a new job has been offered to me by them

265. this medicine has been prescribed to me by my doctor