Write simple English sentences in Past tense.

We are building a database of different simple English sentences that are used in job descriptions. A total of 36730 sentences have been written in present tense. Each sentence usually contains 1 or 2 verbs. The project is divided in 3 parts:

1- Quickly review each sentence in present tense and correct grammatical / orthographical mistakes (if any) - COLUMN C
2- Quickly review each sentence in present tense and make sure the verbs do NOT end with "ing" and needs to be rewritten ("Adding" to "Add") - COLUMN C
3- Write all sentences in PAST tense "Bring a cup of tea" to "Brought a cup of tea" - COLUMN D

All sentences are in an excel sheet. Proficiency in English is required.