`1.`It is said that prevention is better than cure.

`-`Active Voice : People + say + that + Clause

`=>`Passive Voice : It is said that + S + V + Clause

`2.`Michael is supposed to eats spiders.

`=>`Cấu trúc : S + be supposed + to V + (by O)

`3.`The strike is expected to end soon.

`=>`Bị động với "expect" : S + be expected + to V + (by O)

`4.`The cheque must be signed by the manager.

`=>`Bị động với khuyết thiếu : S + model verb + be Vpp + (by O)

`5.`The younger son hasn’t been seen for three weeks.

`=>`Bị động với hiện tại hoàn thành : S + have/has (not) + been Vpp + (by O)

`6.`I was asked some questions at the interview.

`=>`Bị động với quá khứ đơn : S + was/were (not) + Vpp + (by O)

Xin câu trả lời hay nhất ak><

1. People say that prevention is better than cure.
 It is said that prevention is better than cure.
2. People suppose that Michael eats spiders.
 Michael is supposed ​to eat spiders.

3. It is expected that the strike will end soon.
 The strike is expected to end soon. 
4. The manager must sign the cheque.
 The cheque must be signed by the manager
5. They haven’t seen their younger son for three weeks.
 The younger son hasn't been seen for 3 weeks.
6. They asked me some questions at the interview.
 I was asked some questions at the interview

CT chung:

*Hiện tại hoàn thành
S + have/has + P2 + O
=>S + have/has + been + P2

*Hiện tại đơn
S + V(s/es) + O
=>S + am/is/are + P2

*S + say(s)/said + (that) + S + V

*S+asked/wanted to know/wondered+if/wether+S+V