The chief engineer of the high-speed railway ________ Shanghai to Beijing always devotes most of his time ________ his work.

He walked down the hills, and ________ softly to himself

Lily is going to make a presentation in class this afternoon.—Oh, really? I ________ it was Michael’s turn

_______TV does he watch every day— For two or three hours a day.

The manager ____ nothing about the matter ____ he readhis secretary’s report.