He

👨

Pronome

  chose

Verbo

  the

Determinador

  subject

Substantivo

 'Radio  Astronomy

Substantivo propio

  and

Conxunción coordinadora

  the

Determinador

  Structure

Substantivo propio

  of

Adposición

  the

Determinador

 Universe'.

He chose the subject 'Radio Astronomy and the Structure of the Universe'.

He chose the subject 'Radio Astronomy and the Structure of the Universe'.