Sure! Here are the completed sentences for both sections:

**II. Complete the sentences with the words in the box.**

1. Truyen Kieu is written by the great **composer** Nguyen Du.
2. Celine Dion is a Canadian **singer**. She sang the song *My Heart Will Go On*.
3. Mozart was an Austrian classical **musician**. He wrote over 600 pieces of music.
4. Every joke the **comedian** made was greeted with gales of laughter.
5. Vietnamese **pianist** Dang Thai Son studied piano in Moscow.
6. The **artist** is playing some sad tune on his saxophone.
7. This young **artist** is currently exhibiting his work at the gallery.
8. American **actress** Selena Gomez starred in the film *Another Cinderella Story*.

**III. Complete the sentences with the correct tense or form of the verbs in the box.**

1. Mozart **composed** his first piece of music when he was five years old.
2. She usually **paints** in water colour.
3. We all **sang** "Happy Birthday" to her.
4. Most pupils learn **to play** a musical instrument.
5. We **exhibited** many of his works at our gallery so far.
6. Rosie **drew** an elephant and coloured it in.
7. My brother enjoys **taking** photos of the nature and landscape.
8. The band **will perform** live at Central Park tomorrow.