So absorbed _____ in the experiment that he didn’teven notice it was already over 12 o’clock.

（题文）More efforts, as reported, ______in the years ahead to accelerate the supply-side structural reform.

“The Mozart effect” is a study described in 1993 in Nature ________ aroused public interest about the idea ________ listening to a classical music somehow improves the brain.

On the third floor there are two rooms, _____ is used as a meeting-room.

He’d like tea _______ milk in it.