`->` The new treatment is claimed to cure the disease.

`----`

`-` S + V + that + clause

`->` It + tobe + PII + that + clause

`->` S + tobe + PII + to Vo/ to have PII 

S1 + V1 + that + S2 + V2 

→ S2 + be + V3/ed (V1) + to + V1 (cùng thì)

→ S2 + be + V3/ed (V1) + to have + V3/ed (khác thì)

→ It is + V3/ed (V1) + that + S2 +V2

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Đáp án: The new treatment is claimed to cure the disease.

`color{orange}{~LeAiFuRuiHuiBao~}`