`1,` We suggest that the number of daily visitors should be limited by the government.

`2,` I suggest that the deforestation should be controlled.

`3,` I suggest that the amount of smoke and exhaust fumes should be reduced.

`4,` I suggest that money should be raised for charity.

`5,` I suggest that valuable things should be put in places of high-security. 

`-.-.-.-.-.-.-`

${\text{Giải thích: }}$

`-` S `+` suggest `+` that `+` S `+` should be `+` V3/V-ed.. (by `+` O) 

`+` Dùng should trong câu bị động để đưa ra lời khuyên cho ai đó nên làm gì.

`color{red}{#lgdr}`

`1` We suggest that the number of daily visitors should be limited by the government .

`2` I suggest that the deforestation should be controlled .

`3` I suggest that the amount of smoke and exhaust fumes should be reduced .

`4` I suggest that money should be raised for charity .

`2` I suggest that valuable things should be put in places of high `-` security .

`-` S + suggest + O + that + S + should + V-inf + O : Gợi ý ai đó làm gì .

`=>` Bị động : S + suggest + O + that + S(bị động) + should be + V3/Vpp + O .