Answer:
One evening............. (a/an/the) cowherd gathered his cattle to go back home. He...........(notice/noticed/notices) that a calf was missing. He had to look for it, .............? (hadn't he/didn't he/did he). Yes, of course, he searched for a while but all in vain. So he prayed to the God and said, "Lord, if I ever manage to catch my calf thief, I........... (will offer/would offer/offered) you an egg". A few minutes later as he passed ................ (by/from/through) the forest to home, he came upon his lost calf. But the calf was dead and it ........... (is eaten/was being eaten/would be eaten) by a cruel lion. The cowherd found out that the lion was his calf-thief............. (However/Therefore/As soon as) he saw the lion, he shook with fear and prayed the God, "Lord, I vowed that ............ (he would offer/ I would offer/he had offered) you an egg if I came upon the calf thief; now I vow that I'll offer a hen if you ............. (help/helped/would help) me escape from this thief's claws. Hearing his vow, the God made him............. (come/to come /comes) out from his hiding place and complete his first vow.
Step-by-step explanation:
Correct usage in bold