He ________ for weeks and ________ all his notes organized. On the day of the presentation, he ________ nervous but ________ an outstanding performance because he ________ extensively.
1
"studies; has; is; gives; has been preparing"
2
"is studying; has; was; is giving; was preparing"
3
"studied; had; was; gave; had been preparing"
4
"study; had; is; give; have been preparing"