Why don't you watch more English film, Hoa?
=> The teacher suggests  that English should watch more Viet films.

They ate more vegetables and fruits.
=> i suggest that they should eat more vegetables and fruits.

Why don't you book a flight on website?, said Tom.
=> Tom suggested  that I should book a flight on website 

I would learn that course if I were you, said Hana.

=> Hana suggestes that I should learn that course

.Let's eat more vegetable, my mom said.
=> My mom suggested  that I should eat more vegetables

Giải thích 

Ta có cấu trúc của câu trên

Suggest/suggested that S should V

Ngữ pháp suggest: 

+) S+suggest/suggests/suggested+V_ing

+) S+\(\left[ \begin{array}{l}S+suggest/suggests/suggested+O+V\\S+suggest/suggests/suggested+O+should+V\end{array} \right.\) 

5. The teacher suggests Hoa should watch more English film

6. I suggest them eat more vegetables and fruits

7. Tom suggested me should book a flight on website

8. Hana suggests me should learn that course

9. My mom suggested eating more vegetable