extremely busy with and interested (in an activity, book etc)

preoccupied; attentive to

(of looks) eager; earnest; (of a person) having, showing, serious and constant desire or attention

determined, resolute

so deep in thought, so carried away by feelings, that one is unaware of other things

absorbed, fascinated

going all the way (often without stopping); connected by telephone; (of a person) not able to continue, make progress, in some activity; from end to end, beginning to end, side to side; to the end; all over the part of

done