$\text{2.}$ What an interesting film!

$\text{→}$ What + (a/ an) + adj + S!

$\text{3.}$ How beautiful pictures are!

$\text{→}$ How + adj + S + be!

$\text{4.}$ How heavy is your suitcase?

$\text{→}$ What is the weight of + S? = How heavy + be + S?

$\text{5.}$ What is the height of Peter's father?

$\text{→}$ How tall/ high + be + S? = What is the height of + S?

$\text{6.}$ Nobody in Jane's class is taller than her.

$\text{7.}$ How long have you known him?

$\text{→}$ How long + have/ has + S + PP? = When did + S + V<infi>?

$\text{8.}$ It is easy to learn English.

$\text{→}$ It + be + adj + to-V

$\text{9.}$ Vietnamese has beenn studied by Peter in Vietnam for 4 months.

$\text{→}$ Câu bị động thì HTHT: S + have/ has + been + PP + (by)

$\text{10.}$ Trees will be grown in front of house next month.

$\text{→}$ Câu bị động thì TLD: S + will be + PP + (by)