$\text{3.}$ She wanted to know what school I am going to.

$\text{→}$ want to know + wh-/ if + S + V

$\text{4.}$ She asked if I could speak some foreign languages.

$\text{→}$ can ⇒ could

$\text{→}$ any ⇒ some

$\text{5.}$ She asked me how many languages I could speak.

$\text{→}$ can ⇒ could

$\text{6.}$ She asked me if I had got some certificates.

$\text{→}$ HTD ⇒ QKD

$\text{→}$ any ⇒ some

$\text{7.}$ She asked me why I wanted to take the course.

$\text{→}$ HTD ⇒ QKD

$\text{8.}$ She asked me what I had heard about the course.

$\text{→}$ QKD ⇒ QKHT

$\text{9.}$ She asked me if I had some French friends.

$\text{→}$ HTD ⇒ QKD

$\text{→}$ any ⇒ some

$\text{10.}$ She asked me if I liked French music.

$\text{→}$ HTD ⇒ QKD