Question
Rewrite the sentences inserting appropriate phrases in their proper form:
(to open up, to turn on, to turn off)
(a) To enjoy the music and relax, he _________ the music and _________ the lights.
(b) His new discovery is ________ new areas of research in digital technology.
(to open up, to turn on, to turn off)
(a) To enjoy the music and relax, he _________ the music and _________ the lights.
(b) His new discovery is ________ new areas of research in digital technology.